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Mining and Scientific Press 





Co., ' 'oal i Rica. .1 99, 35 1. 671, 711, 

and ii .M Lyons Application oi 

motors i" winding engines and noists.. 

Ditto t drum lor steam or electrical drive. .. , 

mine, \\ esi Africa, his tor) 

■ s ido, company report 

amission, California, rulings of 

Prevention, Anaconda Copper Mining Co.. Editorial... . 

Prevention in mining Edward Ryan..., 

Prevention, Nevada Consolidated... Lindsay Duncan.... 

>ld Mining Co., California 

ntal discoveries of mines *;. L, Sheldon.... 

1913 Editorial. . . . 

Accidents, danger from fulls of rock 

in mines 

Industrial, under compensation, Nevada 

Metal mine Editor iu I. . . . 

Metal mines in United States 

.Street, in Great Britain in 1913 Editorial 

U. s. coal mine fatalities 

Accounting, mine 

Acetylene lamps r<.i metal mines. .Frederick H. Morley...! 

Acid tanks, mastic lining for 

Acme K>>ld mine, Porcupine. Ontario 

Iron mine, .Minnesota 

Addlton, A. Sydney, death of , 

Aeolian Consolidated Copper Mining Co. and Columbia Cop- 
per Co., Idaho 

Aerial tramway, Lesehen, Alaska 

Tramway u. Chinese coal mines C. A. Tupper.... 

Africa, Cape Colony, wages. 1913 

Gold and silver production In 1912 

Katanga, smelting of copper 

Leaching copper in Editorial. . . . 

Natal, wages in 1913 

Orange Free States, wages in 1 y 1 :i 

Afterthought mine. Ingot, California, Leaching of zinc ore 

at the Frank L. Wilson 

Agitation. Air, by COntlnous method. .. Donald F. Irvin.... 

At Nevada Bills L. B. Eames.... 

Ditto Alfred James 


Slime. Foaming during F. J. Glrard. . . . 

Agriculturist v. miner Editorial .... 

Aguaseallentes smelter, America S. & R. Co 

Ahmeek Copper Mining Co., Kearsarge, Michigan 88, 

140. 160, 271, 349, 355. 514, 628. 676, 682. 747. 834. 1025, 

Company report 

Air agitation by continuous method. . . .Donald F. Irvin. . . . 

Blast, A small 

Compressors, oil-driven 

Compressors, turbo 

Lift. Smuggler Union Walter L. Reld.... 

Lifts. Deep mine pumping and A. E. Chodzko. . . . 

Line connections and cup grease 

Weight of cubic foot 

Ajax Mining Co. v. Merrill Metallurgical Co 


Alabama. Birmingham district 

Coal production 

Coke production 

Gold and silver production 

Alameda property. Nevada 

Alaska an.l Siberia, Gravel mining in 

Arrivals and departures. 1913 Editorial.... 

Bering River coal Editorial.... 

Bering River coalfield, Mining methods 

W. R. Crane. . . . 

Bonni field, lignltic coal reserves 

Cape Nome. Drift mining in the frozen gravel deposits 
of Arthur Gibson. . . . 

Chlsana goldfield 118, 269, 470, 630. 824. 865, 

Chisana goldfield claim disputes 

Chisana goldfield. Developments in the..E. F. Wann.... 

Chisana goldfield district, geology of 

Chisana goldfield litigation finished 

Chisana goldfield maps and trails 659, 

Chisana goldfield placers Editorial. . . . 

Chisana goldfield. season's clean-up 

Circle quadrangle 

Copper ore transport. Mother Lode mines 

Topper production 88, 154, 

Dog-team race, All-Alaska Sweepstakes 

"Dredging 39, 

Dredging at Tditarod 

Dredging costs Editorial. . . . 

Dredeing placer tin 

Fairbanks district 154. 

Fairbanks district gold production 269, 

Fairbanks exposition in 1917 

Gold nugget. Knvuknk district 

Gold placers on the Kuskokwim river.. H. W. Reeth . . . . 

Gold production .8, 88, 

TTvdro-electric power Editorial .... 

Tditarod-Innoko districts 



. , I 


33 7 



] _• 5 


84 4 



4 23 





7 HI 



Juneau dlstrh t mines 

Juneau In 1919 

Ketchikan district activity 

Klondike n<-i«i discovery history 

Land lawa and report of Franklin iv. Lane 

Edllo .01 

I K Lake power development E. P. Kennedy... 

UatanuBks coal, r. a Bureau of Mlnea ". . 

Ma tan us ka coalfields Editorial. . 

Mine Inspector's report -.tit 

Mineral production in 1913 

Nelchlna district 3" , 

Noalak- KobUk region 

Nome and Grand Central region geology 

Nome, Third Beach Line at Arthur Gibson . ... 

Nom.-. trade in iyi3 154 

Nome tramway 1 

Opportunity arrives Editorial. . . . 319 

Petroleum Industry ] ;. j 

Placer mining 1 ;, 1 

Railroad bill 282 

Ditto Editorial.... 319 

Railway construction 

Ruby district 4 28 

Ruby district placer mining 154 

Seward Peninsula 

Seward Peninsula gold dredging 96, 154 

Shushana see Alaska, Chisana 

Sliver production 8, 88 

Speel River electro-chemical project W. P. Lass.... 219 

Stripping frozen gravel Editorial. . , . 720 

Thawing frozen ground for placer mining 

Arthur Gibson 143 

Third Beach Line. Nome Arthur Gibson 686 

United States Geological Survey investigations 787 

Yukon-Tanana region, U. S. Geological Survey 

Bulletin 193 

Alaska Ebner Gold Mines Co. assets sold at auction 744 

Alaska Gastineau Mining Co 708 

Perseverance and Sheep Creek mines 783 

Sheep Creek adit 630, 940 

Alaska Gold Mines Co 193, 344. 588, 628, 940 

Company report 783, 800 

Preparatory work of 800 

Stock booming 987 

Alaska Gold Quartz Mining Co 507 

Alaska Hydro-Electro Chemical Co. Speel River project 218 

Alaska Juneau Gold Mining Co 708, 746. 783 

Alaska Mexican Gold Mining Co 118, 232. 392, 

428. 545. 588, 746, 783, 907, 1070 

Company report 997 

Alaska Treadwell Gold Mining Co 118. 232, 392. 

427, 545, 588. 746, 783, 907. 1070 

Company report 997 

Copt, concentrate treatment, cyanide plant, 1913 1024 

Foundry 1024 

Tube-mill 850 

Alaska United Gold Mining Co 118. 232, 392, 

428, 545, 588, 746, 783, 907, 1070 

Company report 997 

Alaska Venture Syndicate 787 

Aldridge, Walter H What is the matter with 

prospecting? 9 

Alexo mine, Ontario 705 

Algoma Steel Corporation. Sault Ste. Marie, Ontario 864 

Algomah Mining Co., Michigan, company rej>ort 998 

Alice G. & S. M. Co., Mont., v. Anaconda C. M. Co 1071 

Alice Mining Co., Idaho 789 

Alladin-Cobalt 231 

Allen. A. W Filter-press operation .... 697 

Ditto Milling operations at the Eldorado Banket 

mine, Rhodesia 501 

Ditto Pressure and vacuum at altitude 978 

Ditto Simplification of gold ore treatment 898 

Ditto Solution control in cyanidation 338 

Ditto Wet crushing in ball-mills.... 419 

Allen, Carl A Engineer's office 887 

Allie Mining Co., Gilmore, Idaho 472 

Allouez Mining Co.. Allouez, Michigan 140, 160. 271. 

355, 514, 676, 682, 747, 834, 906. 1038 

Company report 669 

Alloys, copper and aluminum 188 

Alpena iron mine. Minnesota 125 

Alpha mine, Jarbidge, Nevada 748 

Alta Tunnel & Transportation Co., Utah 236 

Altitude, Pressure and vacuum at A. W. Allen ... . 97 S 

Aluminum Editorial 5 

And copper alloys 188 

Density and rolling of 188 

Imports 550 

Market 87 

Market in 1913 §6 

Prices '■ 276. 792, 960 

United States consumption, 1913 938 

United States production 636 

Aluminum Industry Co., Germany 792 

Amador mine. Iron Mountain. Montana (10 

Amaiac Mines Co.. Jalisco. Mexico 544 

Amalgamated Copper Co 666. 710. 864 

Company report 9 54 


Vol. 108 


Amalt he mine, Nevada, bonus system 349 

, z\n (De Bavay'a) Ltd., Broken Hill, New 


Mesa v. iy 

Mineral Hill gold discovery 708. 865 


Mineral production in 1913 l 

Mining property assessments 

American-Ball four-cyl nslon engine MO 

American Carrara Marble Co., Nevada • - • "H 

Amerlci - ' ■ annual meeting, New _ 





Ditfo or . k . .'.*.". w. ww. w:::. 

poer at 

E. A. Cappelen Smith 

American Engine A Electric Co., Amerlcan-Bal engine.... 

Mill and treatment 

American Institute of Mining Engineers and mining law 

revision Editorial 

Iron and W York *|* 

Montana section ™* 

New York meeting ■ ■ - ■ .- ■ ■ • • - aso 

UlUo Editorial (17, 318 

Ditto Editorial correspondence.... 363 

New fork meeting program 326 

New York section business meeting 90° 

Oil and gas meeting. New York 42o 

Salt Lake meeting 779 

San Francisco section. Diamonds and diamond min- 
ing Editorial. .. . 5a9 

Work of Charles F. Rand 17 

American Investments In Mexico B. P. Crawford 980 

Ditto Editorial. . . . 798 

American Metal Co 1069 

And Butte-Duluth 3 94 

American Mining Congress, work of Carl Scholz 19 

American Nettie mine. Colorado S25 

American kutile Co., rutile production in 1913 537 

American Smelting A Kenning Co 268. 512, 544, 587 

Aguascallentes smelter 707 

And Stewart Mining Co 271 

Colorado plants in 1913 383 

Company report 587, 637 

El Pa&0 smelter 350 

In Mexico 352. 744 

Mexican smelter property valuation Editorial 798 

Rust on. Washington, smelter strike 431 

r i*nke plant. Colorado 867 

Tacoma, Washington, smelter 744 

American Trona Corporation potash production and borax 

prices Editorial. . . . 838 

American Trona Co.. Searles Lake potash. California 308 

American Zinc. Lead & Smelting Co 742 

Companv report 715 

Joplln mining and milling E. H. Leslie.... 840 

Sanitation and disease 742 

Ammonia. Cnlted States production 239 

Ampam Mining <'o„ Jalisco, Mexico 111. 122, 388, '14. 707 

Anaconda Copper Mining Co.. Butte, Montana... 

L49, ISO, 302. 304. 309. 349. 356, 172, 514, 666. 676. ! 

834, 986. 1038 

Accident prevention Editorial. . . . 166 

And International Smelting & Refining Co 744 

And Minerals Separation 747 

Boston & Montana plant C. W. Goodale. 

Company report 823, 874. 1071 

.Employees benefits 1 lt> 

Farm sales 1067 

Leaching Editorial 960 

N< w teaching plant 547 

Original mine and accident record 904 

Revenut In 1913 781 

"Safety First" 626 

Sum Iter 1026 

Stan changes 1027 

v. Alice ..;. & s. M. Co 1071 

Washoe plant dewatering problem 185 

Yearly payroll 116 

Anchor Tin Mining Co., Tasmania 148 

Andes. Mill building in the Alfred A. Watson 683 

Andrada Mines Ltd. Braganea mine, Manfca, Portuguese 

East Africa 573 

Angelo mine. Rand, sand filling of slopes 464 

Anglo-l'erslan Oil Co 1065 

Annual reviews and statisticians Editorial .... 2 

Antarctic regions, mineral deposits Editorial.... 601 

Antelope Gold Mines. Ltd., Rhodesia 585, 821 

Mill treatment 1024 

Antimony: Its ores, metallurgy, and uses L. C. Mott. . . . 292 

Market 85, 87. 275. 433 

Prices 853, 594. 792, 950 

Apex law In the Drumlummon controversy 

Charles W. Goodale.... 
Aporoma Goldflelds, Ltd.. Sandia. Peru, company report.... 
Application of the magneto- metric survey to the Sud- 
bury nickel deposits Kirby Thomas. . . . 

Of three-phase motors to winding engines and hoists... 
C. Antony Ablett and H. M. Lyons. . . . 

Aramayo Francke mines, Bolivia 620, 

Archbold. T. R Filling ore sacks 

Ardmore OH Co.. Ardmore. South Dakota 305. 

Arents, Albert, death of r 

Argall. Philip. . . .What is the matter with prospecting? 

Argentine coal imports 1048 

Argentine Republic mineral products exports 902 

Argonaut Mining Co., Jackson, California 69, 265 

Hoisting at the M. W. von Bernewltz 697 

IdUC disposal 77n 

v, Kennedy Extension 118 

Ditto Editorial 130 

Arizona. Blsbee and Miami tires 746 

i per production 106. 261 

Electric light and power-stations 221 

611a county news 232 

Globe mining district William l. Tovote. . . .443 

Gold Creek district 470 

Gold production 8. 106 

Lead production in6 

Map 58 








not understa nding 




county, 1 'iamond-drilliim at Ajo 217 

. Crus county mining --it nation 194 

Silver production V 106 

State mine report ] : ' :: 

Trespi ented land 

Zinc production • ■ i"7 

Arizona Commercial Copper Co., ropperhlll, Arizona 

307, 442, 586, 788 

Company report 754 

Arizona Copper Co,, Ltd., Morenci, Arizona 155, 160, 

51 i, 676, »8, 766, BS4, 1038, 1057 

Ami shannon Copper Co 165 

Tailing damage suit 81 

Arkansas, mineral production in 1913 830 

Phosphate rock 1035 

Yell county mineral outlook 1048 

Armor-plate. United States and 191 

Arnold. Ralph ... .What is the matter wi 1 1 tig;?. . . . 210 

Arsenic, Great Britain production 914 

United States production in 1913 110 

Asbestos. Quebec production 663 

Russia, Ural district production 829 

United States production 1023 

Asgard Mining Co,, Ltd., Bohemia, company report 358 

Ashantf Goldflelds Corporation, Ltd., Gold Coast Colonv, 

West Africa 456, 4 ."7 

Companv report 552 

Mills 659 

Assay and cyanide solutions 625 

Fire, Estimation of gold, silver, and platinum by 

G. H. Clevenger and H. W. Young 614 

Office. United States. New York City 1035 

Assaying concentrate and black sand for gold and plati- 
num Andrew P. Crosse .... 814 

Assembling and erecting wooden tanks. .J. M. Lilligren. . . . 411 

Assets Realization Co 152 

Associated Gold Mines. Ltd.. Western Australia 125. 

313. - 863 

Ontario interests 24. 505, 705 

Associated mine, Neva via 121 

Associated Northern Blocks. Ltd., Western Australia 

125. 313. 505. 665. 688 

Companv report 558 

Iron Duke and Victorious mills 664 

Iron Duke lease 863 

Victorious mine 504 

Victorious mine. Ora Banda. costs 865 

Atbasar copper mine. Siberia 26 

Atlanta Mines Co.. GOldfleld, Nevada 628. 992 

Atlant'c coast region, depression 341 

Atlas Mining Co., Pueblo mine. Klondike. Panada 711 

Atlas Mining A Milling Co., Sneffles, Colorado 633. 825 

Atmosphere, terrestrial 301 

Auldjo. J. C Evolution of suction-gas power In 

Western Australia 147 

Aurora Consnlldstffd Mines Co.. Aurora. Nevada 309 

And (if Id field Consolidated Mines Co 54 7. 1031 

Austin. L S Irving leaching process ... .77. 88 

Austral Malay Tin. Ltd.. J. Malcolm Newman report on 

Papua 705 

Australasia, fatality rate Editorial. . . . 243 

Gold and silver production In 1912 164 

Silver. 1918 1069 

Australia, eastern, map 704 

Gold discoverv hlstorv 1005 

Gold production 628. 636. 1069 

Gold received at mints, 1913 737 

Government aid to prospecting Editorial .... 89 

i.abor troubles in 1913 765 

Lead production 816 

Legislation 1069 

Mines on London market 24 

Mining in Editorial 680 

Mining troubles in eastern 943 

Northern Territory, Pine Creek district 705 

Timber waste 628 

Transcontinental railroads Editorial.... 279 

Wages Editorial. . . . 641 

Australian Gas Light Co., New South Wales, tank excava- 
tion 1"19 

Austria-Hungary gold and silver production in 1912 161 

Lead production 816 

Ayres, C. W., v. Matthew Harter decision 508 


Babcock & Wlllcox v. .Stirling boilers 

S. Severin Sorensen .... 

Backus & Johnston Co., Peru 

Bain, H. Foster. . . .International Engineering Congress. . . . 

Ditto Rand banket 299. 

Ditto Some unwritten cyanide history. . . . 

Balaghat Gold Mining Co., Ltd., Kolar India 650, 

Company report 

Cvanidation cost 

Balaklala Consolidated Copper Co., Coram. California.... 

152, 233, 304. 508, 633. 

Ball. Sydney H. an.l Millard K. Shaler Mining in the 

Belgian Congo In 1913 

Ball tread tractor 

Ball-mill, dry crushing 

Krupp wet 423, 

v. crushing rolls 

Wet crushing in A. W. Allen.... 

Raillet system, counterbalancing hoists 

Ditto Operator. . . . 

Baltic Mining Co.. Michigan 88. 140. 

Baltimore mine. Boulder, Montana 










:: 16 

Vol. 108 


i 'mi. .I Slal |(] 

ilh o\ i .in 

i. .inn. ni Co., Kendall, Montana I8«, .1 

Com| 1 -, 


•-.»nu iu;n 

Harramiu Mining A: Exploration, Ltd., Kkm'L compi 


Barry ■ le dtstrh t. Alaska _'6y 

onion, Colorado B2fl 

'iT-it Britain production 

■ tin mine, 1 "<>i n\\ all pi odut tlon ... 
Black Hawk, Co 

Batopllas Mining Co., Mexico 

Batter) Frame, new 

Frame, Tlghlner mine 

oalta ..r i-'iiiii.... 

■ Britain produetlon 

United Statea production In 

11':'. 131, 

. . . Editorial/ '.'. 





1 !■' 



Gold Mining Co., Wyoming 749 

Conaolldated Mines, Ltd., Cobalt, Ontario. .182, 19V, 868 

... Utah 310 

Portland Cement <*,.-. Oregon 350 

inaland Copper »'■>-. Rhodesia 686 

Beck Mining Co., Wyoming, Increaalng the efficiency of n 

grinding pan Jolin Randal).... 417 

Behrtng Dredging Co., Alaska 708 

Belcher Mining Co., Washington 351 

Beloher Silver Mining Co., Gold Mill. Nevada, company 

'. 591 

Pumping 652 

Belgian Congo coal 325 

Diamond production 324 

Gold production 323 

Mining In 1913 

Sydney H. Ball and Millard K. Shaler 320 

Tin 324 

Belgium lead production 816 

Pig ir..n production 477 

Bell Reel Development Co., Ltd., Rhodesia 585 

Belt conveyors 128 

Driving and loss of power 341 

Steel 939 

Hen llur Leasing Co.. Republic. Washington 122. 236. 

273. 510, 749. 868. 947 

Borden pan 663 

Bergw.rks-W..hlfahrt, Germany. Murcx process 931 

Berl-berl disease 782 

Bering River coal Editorial 878 

field, Alaska. Mining methods in the 

W. R. Crane. ... 327 

Bethlehem Steel Co. in China Editorial 557 

Bezant inlii'.. Colorado 991 

Big Bend Mining Co.. Washington 395, 947 

Big Blue mine. California 743 

Big Four. Nevada 121 

Blgney placer claim. Liberty. Washington 473. 868 

Bingham & Garfield railway, Utah, Wall suit 310 

Bingham Mines Co.. Utah 628. 63S 

Bishop, Spencer. . .Cerro de Pasco smelting plant, Peru.... 177 

Blsichl tin mine, northern Nigeria 23 

Bismuth. Peru production 87i 

Queensland production In 1913 793 

Tasmania production 714 

Bisulphite zinc process, Metals Extraction Corporation, 

Ltd 250 

Black Eagle Gold Mining Co., Nevada 121 

Black Hills. Mineral resources of the Harney Peak 

pegmatites, I. II Victor Ziegler. . . .604, 654 

Black Hills Tungsten Mining & Milling Co., South 

Dakota 654 

Black Lake Asbestos Co., company report 541 

Black Oak mine, California, Fisher suit .' 789 

Oliver filter 185 

Black Range, Western Australia 665, 863 

Black Tail mine. Washington 868 

Black-Warrior mine, Arizona 442, 487 

Blacksmith's problem. . .W. S. Dooley and T. H. Proske. . . . 384 

Blake crushers 222 

Blast-furnaces, banking and blowing out iron 696 

Blasting and use of explosives, Nevada Consolidated Cop- 
per Co 577 

Electric, in shafts with delay action exploders 

C. W. Morse 216 

Ore by electricity 188 

Rock, Kelly. Butte quarry. Washington 502 

Bohannon Dredging Co., Idaho 747 

Rnh.-mia. Asuar.l Mining I .','.. Lt.l., company report 35$ 

Boise King Placer Mining Co., Idaho 1030 

Bolln. Jakob, death of 870 

Bolivia, Aramayo Francke mines 620, 1076 

Compania Huanchaca 1066 

Incaoro gold mine and mill, Pallaya 

Francis Church Lincoln.... 


Tin fields, Transportation and government regulations 

in G. W. Wepfer 

Tin mining in G. W. Wepfer 

Ditto Editorial 



Bonanza King mine, Carville, California 866 

Bonnie Claire mine. Nevada 309 

Borax. California production 88, 588 

F. M. Smith holdings Editorial 957 

Peru production 872 

Prices, Potash production and Editorial. . . . 838 

Borax Consolidated. Ltd., and Pacific Coast Borax Co 

Editorial 838 

Bore-hole coefficients 341 

Bosqui, F. L Decline of the Rand 736 

Boston & Idaho Gold Dredging Co.. Idaho 96, 455 

Boston & Montana Development Co 587 

Flkhorn mining property 786 

Plant C. W. Goodale.... 897 

Boston-Aurora mine. Missouri . . 826 

Boston Stock Exchange 106 1 

Bouerv, Pierre. . .California miners and the Exposition.... 384 

No 1 u astern Australia 


Smith, Jr.. ii Ruing 11,. 

Braden Coppei Co . 1., Junl 1 I 

N.-w nnanclng 

1 ■ - 1 " "-.'■. < ,.".1 tiii: k. .11 

Bradley. 1 Mi.. .. California miners and the Kxc 

Ljuto ...... .U1...1 ,s it,, matter with prosp 

...What is 11,,. ma tier wan prospecting ■ 


Brake, car 

Brakpan Mines Co., Rand] company 

Bras* Induatry, growth 

.a 1 lollierles, Ltd., Alberta, Canada' / / 
Bi ill, South America, diamond mining .... 

-i John del Rey Mining Co., Ltd ../.ii' 108 

Brick, California production 

Hudson River region production 

San, I lime in t'nlted States 

Bridge, rationale of design 

Brlquettlng, Fuel. 1818 

Britannia Mining & Smelting Co., production' in'iiiia 

British-American Petroleum Co., oil and gas, Utah 
British and Dutch in, lies petroleum production In 1818 
British of scientists, Australian meeting 
British Broken Hill Proprietary Co.. Ltd.. Broken Hill' 

N.-w s, nub wales 

British Columbia, Camp McLeod .... 

CarlbOO district 

Coal production .../."./ 

Coke production /////////' 

Copper King group ]' ]] 

Copper production 

Copper River coalfields 

Gold production 

Indian River district 

Kamloops district / / / / ' 

Lead production / ' / 


Mining In 1913 ........'.!/ 

Nelson district 

Placer gold production in 1913 .......'.'.'. 

Portland Canal tunnel Lloyd C. White 

Radium legislation 

Rossland mines '. , 273, 

Seymour River mining district 

Silver production 

Zinc production , . , 

British Columbia Copper Co.. Ltd.. Greenwood. British 

Columbia 117, 160, 198, 268, 273, 351. 355, 514. 

676. S3 I, 

And shareholders 



British South Africa Co., history 

Rhodesian government ' 

Brock, R. W., Deputy Minister of Mines, Canada 


Ditto Prospecting and leasing. . . . 

Broken Hill Junction North Silver Mining Co., N. L., 

Broken Hill. New South Wales 

Broken Hill Proprietary Co., Ltd., Broken Hill. New South 

Wales 24, 427, 

Company report 

Refinery. Port PIrie 

Steel plant progress 

Broken Hill South Silver Mining Co., N. L.. Broken Hill, 

New South Wales 

Company report 

Costs and ore treatment 

Ore broken and wages 

Brooks, Huxley St. John Continuous process?.... 

Broughton-Newman lease, Nevada 

Brown, R. Gilman 

What is the matter with prospecting?.... 

Brown hematite ores, Mining and washing 

w. R. Dodge 

Patents decision 

Patents v. Tonopah Mining Co., Some unwritten cyanide 

history H. Foster Bain 

Browning, Edward. . .New safety detonator at Cornwall. . . . 
Brunswick Con. Gold Mining Co., Grass Valley, Califor- 

Company report 


Mine drainage 

Brunton. D. W...What is tire matter with prospecting?.... 
Buck zinc prospect near Boracho, Texas. . . . J. A. Udden. . . . 

Buckets, dredge 

Elevator dredge equipped with stern delivery stacker, 

Levee building with C. G. Leeson.... 

Buckeye-Belmont Mines Co., Tonopah, Nevada 

Balliet system, counter-balancing hoists 


Buckeve Engine Co. locomobile 

Buckhbrn Mines Co., Beowawe, Nevada 91, 

Oliver filters 

Orebodles described 

Power plant E. H. Leslie 

Buckland River, Victoria, Australia 

Buckland Star, Victoria. Australia 

Bucklev Mining Co., Colorado 

Bucvrus shovel, water supply from locomotive tender 

Bueha Tierra Mining Co., Ltd., Santa Eulalia district, 

Mexico . . . .' 

Company report 

Buffalo Mines. Ltd.. Cobalt, Ontario. .122, 199, 273, 592. 869, 

Company report 993, 

Buildings, saw-tooth 

Bullfinch Proprietary. Ltd., Western Australia. .. .125, 313, 

505, 664, 665, 

Bullion, molding ::i'V«V 

Bullwhacker Copper Co., Butte, Montana 116, 302, 

Copper leaching 

Flow-sheet - • ■ 

Bunker Hill & Sullivan Mining & Concentrating Co., 



1., 11 




, .1 


























Vol. 108 




Kellofiff, Idaho 157, 198, 271. 430, 472, i: 

590, 710, 789, 946. 1030 

And Malm mill 689 

pans report 825, **•>'> 

explosives, etc ° b o 

Mint- section 3y4 

ty First 394 

Trolley wires - • ao. 

Bunker Hill Consolidated Mining Co.. Amador City. Cali- 
fornia 6 '- 

Burbank a Main Lode, Ltd., Burbanks. Western 

ilia ■ • • - - - - ■ 

Burch Albert. . . .What is the matter with prospecting? 

Bureau of Mines Building, Pittsburgh. Pa 612 

Inventions, Denver section 987 

Personnel 80;; 

Scientific investigations 10b. 

Washington 532 

Burma, India, gold dredging in 79 

Burma Corporation, Burma, India, company report 98j 

Burma Gold Dredging Co.. Burma, India 79 

Burma Mines, Ltd., Burma, India 2y. [99 

Rehabilitation 985 

Burro Mountain Copper Co., Tyrone, New Mexico, com- 
pany report 61? 

Burt-Pool Iron mine, Minnesota IBB 

Burton. C. S Review of the New York share market 30 

Busch-Sulzer Bros. Diesel Engine Co 796 

At Panama-Pacific Exposition 918 

Business and mining, a retrospection 

F. Lynwood Garrison. ... 33 

And Suez Canal Editorial 1041 

In United States and Wall Street Editorial 243 

Outlook Editorial 921 

Butte, Montana, ore genesis and revision Editorial.... 317 

Butte-Alex Scott yearly payroll 116 

Butte & London Copper Development Co.. shaft unwater- 

lng. and Rainbow Lode Development Co 1027, 1030 

Butte & Pensacoia Co f *- (l 

Butte & Superior Copper Co.. Ltd.. Butte. Montana At, 

V 149 196. 302. 509, 349, 424. 670. 864. 909. 1030 

And Elm Orlu dispute 748 

Black Rock claim ' »•* 

Company report 915 

Mill production , 871 

Mill work 1027 

Tube-mill tests 316 

v. Minerals Separation decision 759 

Ditto Editorial 758 

v. Minerals Separation, effect of decision 

Yearly payroll 116 

Butte-Ballaklava Copper Co.. Butte. Montana 2.2. 509. 633 

Butte Central Copper Co 586 

Butte Dredging Co - ■ - . - . . 429 

Butte-Duluth Mining Co.. Butte. Montana 62. 302. 

349, 472, 509. 710 

And American Metal Co 394 

Copper leaching S6 

Flow-sheet j7, 54* 

Leaching plant 547, 789 

Yearly payroll ■-■*■„■_■ ,!!? 

Butte Miners Union. Montana riots 102*. 1031 

Butte Reduction Works, tailing treatment 

Bancroft Gore. . . . 529 

Butte. Wisdom & Pacific railway 587 

Butters, Charles Relative efficiency of sodium and 

potassium cyanide 520 

Butters filter process. Moore Filter Co. v. Tonopah M. Co. 

and Montana Tonopah Mining Co Editorial. ... 878 

Bwana M'Kubwa. Rhodesia 22 

Caaba mine, Orovllle, Washington 

Cable, track, transport. Pueblo. Mexico 

Caddv. J. P Precipitation and clean-up at the Lake 

View mill 

Calamine, Joplln district production 100, 115, 

Calaveras Copper Co., Copperopolis, California 194, 

Caledonia mine. Idaho 

Calera. Sonora 

Calgary Petroleum Products Co., Dlngman well dis- 

California Accident Commission, rulings of 

Accidents in 1913 Editorial 

Amador County mills. Disposal of residue 

M. W. von Bernewltz. . . . 

Borax production 88. 

Brick production 88. 

Cement production 88, 

Commission of Immigration and Housing. .Editorial. . . . 

Copper production 88, 107, 261, 

Crushed rock and granite production 

Darwin district 

Death Valley activity 


Dredging costs Editorial 

Freight rates on ores 

Gas, natural, production 88, 

Gold discovery history 

Gold dredging 

Gold production 8, 88, 107, 

Granite and crushed rock production . . . . .' 

Graphite production 

Iron production 

Iron smelting, electric smelting 

Klamath river, Hydraultcklng on the.. J. H. Theller.... 

Lead production 107, 

Magalla district 

Magnealte production 

Mariposa district news 

Marysville Buttes. Sutter county 

Metallurgy of Mother Lode. . . ,M. W. von Bernewltz. . . . 

Minerals In 1913 88, 

Miners and the Exposition 









34 7 








F, W. Bradley. Arthur Goodall, Louis Rosen f eld, 

Jdhn F. Davis, S, A. Knapp.... 299 

Ditto tierbert Lang. . . . 263 

Ditto G. vw Metcalfe, S. W. Mudd; Pierre r 

Harold T. Power, John B. Keating;.. . 884 

Ditto Charles iv van Barneveid. . . . 213 

Miners and workingmen's compensation . . . Editorial. . . . 13U 

Mother Lode region and the Plymouth mine 109 

Mother Lode region map 65, ug 

Mothei Lode. Residue disposal 

M. \V. von Bernewitz 770 

Mount Lassen Eruption Editorial .... 11141 

Nevada County map lu29 

Nlmshew district gjg 

OH 301, 545 

Orovllle drudging district 297 

Panama-Pacirtc Exposition, state mining exhibit 

Editorial 206 

Petroleum production 88, 163, 588, 716, 914 

Placer mining 107 

Quicksilver production 81, 88, 354, 588 

Safety First 631 

Safety First conference Editorial. . . . 480 

San Francisco mint 4 70 

Sierra county mining aos 

Silver production 8, 88, 107, 588 

Southern, map 195 

State Compensation Insurance Fund 907 

State Mining Bureau, Bulletin, recent mining law 

Editorial 206 

Trinity county map 1070 

Tuolumne county news 233 

Water appropriation law 860 

Workmen's Compensation Act and wage reductions 423 

Zinc production 107 

California Exploration Co 109 

And Northern Ontario Exploration Co 189 

New Plymouth Consolidated mill 43S 

Plymouth mine, California 903 

California Mines Co., California 545 

Callahan, H. C Revision of the mining law 422 

Calumet & Arizona Mining Co., Warren, Arizona 160, 

307, 355, 428, 514, 586, 588. 676. 824. 834, 1038 

Ajo property Editorial .'.17 

Company report 544 

Concreting the Junction shaft 579 

Diamond-drilling at Ajo 217 

Calumet & Hecla Mining Co., Calumet. Michigan 88, 

140, 157. 160. 271, 349, 355. 430. 514, 546, 628. 676. 834, 

906, 992, 1038 

Company report 669. 1025, 1078 

Leaching plant 909 

Shaft depths 611 

White Pine property 789 

Cam & Motor Gold Mining Co., Ltd., Rhodesia 585, 821 

New mill, results of first run 738 

Company report 1077 

Cameron-Johnson Gold Mining Co., Valdez. Alaska 269 

Camp Bird, Ltd., Ouray, Colorado 24. 454, 471. 633. 

825, 940, 1030 

And Messina copper mine, Transvaal 285 

Mill ore treatment 460 

Canada, see also British Columbia, Ontario, Quebec, and Yukon. 

Alberta, Calgary district oil and gas discoverv y43, 993 

Ditto Editorial 919. 1002 

Alberta, Calgary district oil and gas leases situation .... 542 

Alberta, Calgary oilfield geology 988 

Alberta, coal mining and production 629 

Alberta, coal mining and railroads 115 

Brock, R. W., Deputy Minister of Mines Editorial. . . . 129 

Coke and tariff 704 

Eight-hour day law and exemptions 345 

Gold production 8. 164, 911 

Industrial Disputes Act 344 

Iron and steel tariff changes 704 

Klondike gold production in 1913 199 

Klondike, report of Whitehorse assayer 711 

Lead production 816 

Manitoba stock sale protection measure 943 

Mica production in 1913 914 

Mines on London market 23 

Nova Scotia gold production 702 

Oil regulations 345, 426 

Radium legislation 431 

Silver production 8, 164 

Canadian Coal & Coke Co 344 

Canadian Copper Co., Ltd 390. 497. 505 

Copper Cliff and Frood water supply 351 

Canadian Klondyke Mining Co., Yukon 23, 39, 

122, 199, 236. 711, 869. 993. 1032 

Company report 537 

Dawson dredges 386 

Dredging cost Editorial.... 720 

Canadian Mining & Exploration Co.. prospect and mine 

examinations 743 

Canadian Mining & Finance Co 671 

Canadian Mining, Exploration & Development Co.. British 

Columbia 548 

Canadian Mining Institute monthly bulletins. .Editorial. . . . 602 

Montreal meeting 495 

Ditto Editorial 317 

Canadian Venezuelan Ore Co 345 

Canal, Panama Editorial 958 

Panama, and copper smelting ^°? 5 

Panama, cost 979 

Canals, ship. Tonnages through. 1912 653 

Cananea Consolidated Copper Co.. S. A.. Cananea, 

Sonora 60, 158, 160. 198, 355. 514, 676. 790. 

823. 869, 1038 

Cancer, radium and diathermy 1064 

Canisteo iron mine, Minnesota 125 

Capital Mining & Tunnel Co.. Georgetown, Colorado, 

lessees' work 825 

Capitalist viewpoint, mining industry 

Adolph Lewisohn 383 

rar brake 1059 

Car dump 979 

Vol. 108 



frl.' i ... Itl. I. r.t IS] 

Mil .ilt 

i mine I'm nwall, production 

rado production ion, 108, 

Utah in:;. 

Houghton, Ml. hlKitii. lire 














.ill Mini- i I.. 

• i Gold Mil .llu 

i. s... wimt in the limit. i with proai ting .'.... 

I'utiiii. Donald C what in tin- matter with pros- 

i .tint diamond-drill holea 387 

California production 88, 688. 

Portland production 

Centennial Copper Mining Co.. Calumet, mi.IiIkuh 140, 

160. 271. :::■:.. :.i i. .... 

Coinpen) report ■■ 

Center Btai mine, Roasland. British Columbia. Consolidated 

\i ft S Co of Canada, Ltd., Trail 878,749, 

.is. i Costa Rica, Nicaragua, ami rananta 

<;.. 1.1 an, I silver production In 1918 164 

i iiiatrmaiu mineral exports 97 

Technological studies Editorial ".is 

l El I'. irai I. ■«'... lil Mining Co., California 2::l' 

Centra] Eureka Mining I',.. Butter Creek. California 118 

Central .Mining Co., Washington 869 

Central Mining ft Investment Corporation. Rand 808 

Central Red, white & Blue, Hemiigo. victoria 637 

Central States, metal production In ii'i3 779 

Centrifugal pump, maximum efficiency 387 

Pump runner speed 301 

Pumps In elevating ore pulp 703 

Cerro il<- Pasco Mining Co., Cerro de Pasco. Peru.... 160. 

362. 356, 482. 514. 676. 834. 1038 

Smelting plant. Peru Spencer Bishop.... 177 

Oerro Gordo mine. Keeler 307 

Certlgrue Dredging Co.. Colombia 184 

i '.i usMlte. Colorado. Custer county deposits 945 

Chaffers Gold Mining Co., Kalgoorlie, Western Australia.. 

505. 665. 

Chambers-Ferland Mining Co.. Cobalt. Ontario 231. 

Champion Copper Co., Palnesdale, Michigan 88, 140, 

Champion mines. Nevada City. North Star Mines Co., Grass 

Valley. California 

Champion Iti-ef Gold Mining Co. of India, Ltd., circular 


Company report 399, 

Machine-drills 378 

Ore treatment 650, 656, 1076 

Chance, H. M Mining and Metallurgical Society, 

work of 18 

Chinning. J. Parke Ethics of mine promotion .... 182 

Charcoal burning for prospectors W. H. Washburn.... 613 

Charters Towers, Queensland, ore deposits 502 

Chase. Charles A What is the matter with prospect- 
ing? 168 

Chemical abstract journals 939 

Chewelah Copper King Mining Co., Chewelah. Washing- 
Ion 351, 592 

Chicago Pneumatic Tool Co. portable mine hoists 241 

Chief Consolidated Mining Co.. Eureka, Utah 236, 868 

Company report 357 

Chile and Peru, Hydro-electric power 

Lewis R. Freeman.... 333 

Assessing mines Editorial.... 957 

Braden Copper Co.. La Junta 32. 55, 152, 158, 160, 

263. 351. 355. 390. 465. 506. 514. 537. 627. 676. 834, 986, 

1032, 1038, 1066 

Chile Copper Co.. Chuqnicamata 32.54.960. 986 

Chile Copper Co. and Exploration Co.. Ltd . . Editorial .... 402 
Chile Copper Co.. Chuqulcamata, Interview with Daniel 

Guggenheim 574 

Chuquicamata. Leaching and electrolytic precipitation 

of copper at E. A. Cappelen Smith. . . . 739 

Coal, cost of 416 

Collahuasi mining district 683 

Fuel consumption 416 

Nitrate industry. I. II. Ill Lester W. Strauss 972, 

1014, 1049 

Nitrate production 501 

Chile Copper Co.. Chuqulcamata, Chile 32, 54 

And Exploration Co.. Ltd , 465 

Interview with Daniel Guggenheim 574 

Leaching plant 986 

Ditto Editorial 960 

Chile Exploration Co.. Chuqulcamata, Chile 620 

Leaching and electrolytic precipitation of copper 

E. A. Cappelen Smith 739 

Chilean mill. Elspass Engineering & Mining Machinery 

Co 836 

Chlllagoe. Queensland, troubles 705 

China and Standard Oil Co Editorial 797 

Bank notes first issued 565 

Ching Hslng coal basin Edward di Villi 578 

Coal mines, aerial tramway C. A, Tupper.... 379 

Gold production in 1912 164 

Han-Yeh-Ping Iron & Coal Co 1058 

Iron ore development Editorial.... 557 

Mining in Editorial 440 

Mining regulations Editorial 877,1002 

Monetary position 506 

Silver sycee 265 

Standard Oil Co. and Japanese newspapers 

Editorial 558 

Chinese Eng. & M. Co 1076 

Chlng Hsing coal basin Edward di Villi 578 

Chino Copper Co.. Santa Rita. New Mexico 121, 160, 

261, 350. 355, 477, 514, 676. 827. 834. 1038 

Company report 706, 954 

'Gopher' blasting 902 

Chisholm iron mine, Minnesota 125 

Chodzko. A. E Deep mine pumping and air lifts. ... 136 

. . I 




loo I 




drum tor si I drlvi 

. , ,, ' ^ I Anli ii i ii M Lyon*!! ! ! 

n i. ..I. I Mines, l.i.l , Kun 

Chrome, New i luctlon in 1918 

Chromlto, California production 

Chromium, ilnt .,..,.!.. 

ChryBotlle, Arlsona 

Chuqulcamata, Progress at, Interview with Daniel Guggen- 

rill Mm. in Chontalpan y, Anexaa, Ilexloo, oomnai 


Clnco mm:. i .'... Jalisco, Mexico .'liY i 

< andei .ii.i > lonsolldated, Rand 

in.. I'm.. Rand , 

City 'i Cobalt Mining Co., Ltd., Cobail .........,,..!!!! 

aihi Cobalt Townslte and O merger - 

i'i\ luxation. Miner «» a pioneer ol T. A. Rlcki 

Clark. W. A., mln. ■ i ..II 

Clarkdale Improvement Co., Arlsona , 

Classification at Miami ,, 

Classifier, Screw, and line on- feeder. . . s. a. Worcester..,, 


Valves hi cook .......! 

Clay products, Philippine Islands production ...'.'.'.'.. 

Clearwater Gold & Copper Mining Co., Idaho 

Cl.imcll. J. E Solution control in cyanldatlon . . . . 

Clermont-Jumbo mine, Goldlield Consolidated Mines Co 

Nevada 553 

Clermont mine, Goldlield Consolidated Mines Co.,' 

Nevada 552 

Cleveland Cliffs Iron Co.. Marquette, Michigan 989 

Cleveland Itock Drill Co., Neverleak coupling 600 

Clevenger. G. H. and H. W. Young Estimation of 

gold, silver, and platinum by tire assay 614 

Clinton Consolidated Quartz Mining Co.. California 631 

Cloverdale mine, Cloverdale, California, ore occurrence 

Leroy A. Palmer 812 

Coal, Alabama production in 1913 1037 

Alaska, Bering river Editorial ... . 878 

Alaska, Bonnl field llgnltlc reserves 824 

Alaska, Matanuska fields Editorial.... 7;,* 

Alberta, Canada production 629 

Anthracite mining cost 1064 

Anthracite, Pennsylvania production Editorial.... 206 

Anthracite, production of small sizes 1048 

Argentine imports 1048 

Belgian Congo 325 

British Columbia production 202 

California production 788 

Chile, cost of 416 

China, Chlng Hslng basin Edward di Villi 578 

Georgia production 928 

Government mine, North Dakota 565 

Government mine, Wonthaggi, Victoria, Australia 565 

Great Britain production 914 

Japan production 125, 1035 

Leasing bill, Ferris 988 

Matanuska, Alaska, U. S. Bureau of Mines 708 

Michigan production 909 

Mines, Aerial tramway to Chinese C. A. Tupper.... 379 

Mines, Gases found in 935 

Mining, Alberta, Canada 115 

Mining, undercutting machines 978 

Montana production 149 

New Mexico production 1031 

New South Wales, Australia, production In 1913 705 

Ohio mining in 1913 1037 

Ohio production 513 

Oregon production 591 

Peru production 872 

Philippine Islands production 911 

Powdered, in metallurgy Editorial. . . . 603 

Queensland, Australia production in 1913 793 

Queensland, Australia, resources 625, 628. 

Russia production and consumption 551 

Smoke and plant effliclency 984 

Sumatra, Dutch East Indies production of Ombilien.... 703 

Tasmania production 714 

Union of South Africa production 626 

United States accidents 1075 

United States, and tar 301 

United States production 8, 88, 963 

United States production of anthracite 1037 

Utah production 947 

Wales production 773 

Washington production 914 

Wyoming production 914 

Coalfield, Bering river, Alaska, mining methods 

W. R. Crane. .. . 327 

Coats & Ortt Mining Co., Missouri 584 

Cobalt, melting point 112 

Ontario production 592 

Cobalt Central mine, Penn-Canadian Mines, Ltd.. Cobalt, 

Ontario 199 

Cobalt Lake Mining Co., Cobalt 122, 199. 505, 705 

And Cobalt Townslte and City of Cobalt merger 786 

Company report 510 

Cobalt Silver Queen, Ltd.. Cobalt 199 

Cobalt Townsite Silver Mining Co., Ltd., Cobalt 25, 199, 389 

And Cobalt Lake and City of Cobalt merger 786 

Company report 506 

Cobre Verde, Sonora 869 

Cochise Copper Co., Arizona 824 

Coe Brass Manufacturing Co. growth 926 

Coeur d'Alene district, Idaho, mining costs 185 

Electric plant Girard B. Rosenblatt.... 335 

Coghill. Will H Standardization of terms. .. . 456 

Coinage of mints in 1913 163 

Coins, United States standards 341 

Coke. British Columbia production 202 

United States production In 1913 928 

Colbath, James Solution control In cyanldatlon.... 421 

Colburn-A.iax mine. Cripple Creek. Colorado 156. 308, 991 

Colby, William E Revision of the mining law, dis- 
covery 246 

Cold water paint 918 

Collins. Edgar A Cost at the Commonwealth.... 859' 


Vol. 108 

Collins, George E What la the matter with pros- 
pecting . 10 

Colomolu. Certlgue Dredging Co l ^ * 

Ctioco district, Mining in 696 

mblan Mining <v exploration Co ISA 

i iredging ls:: 

Mining industry i s -- 

Oro mg Co.. Ltd 15S, 1S3. lay, 396. 592 

. Ltd.. and its future 166 

Pato Mines, Ltd 10 '■- 

I'ato Mines, Ltd., drilling A. C Ludium SU 

i.u, Mining & Exploration Co., Columbia 11*9 

Colorado and radium Mil Horace F. Lunt 7su 

Aspen district silver and lead production in 1913 120 

k u.iwk ore shipments In in 13 118 

district 589 

Breckenrldge district minerul production in 1913 120 

Bru*h Creek district 991 

notite production 100, 103. 112 

Central City district 348 

Chaffee county mineral production in 1913 119 

Creek county, Idaho Springs district 119, 195. 

471, 509. 669 

Clear Creek county metal production In 1913 119 

Coal miners strike 710 

Coal miners strike and intervention Editorial 

Copper production 261 

Creeds district, mineral production in 1913 120 

i freede district mines 1030 

Cripple Creek district 1^0. 195. 271, 308. 393. 430. 

171, 683, 7Sy. 991, 1071 

Cripple Creek gold production In 1913 156 

Custer county cerussite deposits 946 

Eagle county metal production in 1913 119 

Eagle distrh t 509. 710 

Gilpin county mineral production In 1913 119 

Gold dredging 96 

Gold production 8 

Idaho Springs, radium discovery Editorial.... 165 

Leadville district 710 

Leadville district mineral production In 1913 119, 165 

Leadville district mines 270, 10H9 

Leadville district sine -carbonate ores 82a 

Leadville. new zinc smelter 589 

Mine output and assessors Editorial. ... 479 

Mine production 42 

Mineral production 633 

Mineral production value Editorial. . . . 920 

Mining convention at Denver 270 

Montrose district ore discovery 5 16 

Oak Creek district discovery 393. 509 

Ouray county mineral production In 1913 1»7 

Ouray county mines 34 8. 471. B2G 

Petroleum production 163 

Pitchblende i"4 

Pitchblende ores, geology 946 

Radium • 867 

Radium lands and withdrawal of Editorial.... 166 

Rolllnsville district 842 

Roosevelt tunnel 747, 789. 825, 867, 946 

Ban .Juan mineral production 157 

Silver production 8 

Silverton district 318. 1030 

Smelters Editorial 926 

Smelting In 

Stoping methods 15 


Timber cut in 1911 939 

Dnaweep copper district 1030 

Uranium ores 703 

Vanadium 104 

Colorado Metal Mining Association 669 

Branch 589, 747 

nbls Copper Co., Idaho new properties 909 

nbla University engineering enrollment 964 

001 Of .Mines." [864-1914 852 

School Of Mines, semi-centennial 712. 940 

Ditto Editorial 679, 837. 1042 

Students summer earnings Editorial.... 243 

Colustte. Butte, Montana 1024 

Col v In, Clarence K. . ' 'ion pen sat Ion Act and prospecting. ... 838 
Combination mine, Goldfleld Consolidated Mines Co.. Ne- 

Cornel Minimi Co., California 

Of Immigration and Housing in California.... 

Editorial. . . . 

Commodore Mining Co., Virginia. Minnesota 

idore Gold Mining Co., Western Australia 665, 


on wealth Mining & Milling Co., Pearce. Arizona.. 91, 

i ompany report 

at Edgar A. Collins 

Milling operations E. H. Leslie. . . . 

dea Bolivia 

.v reports: 

kilning Co oiorado 

Ahnieek Mining Co., Michigan 

Alaska Gold Mines Co 783, 

1 •■ Sold Mining Co 

Alaska Treadwell Gold Mining Co 

[.a United Gold Mining Co 

Mining Co., Michigan 

i nlng Co . Michigan 

i <"*opper Co 

zinc me Bavay's). Ltd 

American Smelting & Refining Co 587, 

Ati ft & Smelting Co 

per Mining Cn., Montana 823, 874, 

■ oma Goldfle a, Peru 

•lal Vflnli Co Arizona 

A°ir.'ir-1 Mining Co., Ltd.. Bohemia 

■ Idflelda Corporation Ltd., Gold Coast Colony, 

West Africa 

I X-.--t1i.-rn Blocks <"YV A . > Ltd 552 

tfinli Co., Ltd.. India st:: 

; 1 11. Montana 436 

Barramia Mining & Exploration, Ltd., Egypt 71^ 



7 '.< 7 






9 \i 

fin -2 




■ r silver Mining Co.. Nevada 5al 

oiacit Lai&e Asbestos Co ] 5.41 

i.i uk pan Junes Co., Hand \\\ lo \ 

j .; .oven inn n oprietarv fining Co., Liu .', 5d2 

BrOKen tiiil Mouth Saver iuming Co., Australia 'tl6 

biunsrtkii A>iisoniiateu uoid Aiming co aaa 

ttuena Lieria tuning Co., jl.iu., &unm i^uialia district 

■ " 790 

Bufiaiu m. nes, Liu.. Ontario yyj t iuj.i 

ouiiKer inn & bu til van Aiming & Concentrating Co,' 

iv e uogg, laanu 825 833 

Burma l ui pot aiiun yys 

liurro Mountain Copper Co., Tyrone. New Mexico , 618 

Lutle £ bUpei'lOr Copper Co., Ltd yii 

C'atumet & Arizona turning Co 541 

l alumei & fciecia Alining Co., Michigan 669, 1025, 1078 

Cam & Motor, linodesia 1077 

Canadian Klondyke Mining Co 53; 

Casey Cobalt Mining Co., Ontario . . 5u6 

Centennial Copper lu, Michigan 6t>y 

Cliumpion Reet Hold Mining Co.. of Ind.a, Ltd 399, 606 

Cnlel Consolidated Mining Co., EureKa, Utah 35; 

Cliino Cupper Co.. New Mexico 706, 9i>4 

Cla. Minera Chontalpan y Anexas, Mexico Si"3 

Cooalt cake Mining Co 5iy 

Col. ait Townsite Silver Mining Co. of Canada, Ltd. .'. . " 506 

Commonwealth Mining & Milling Co., Pearce. Arizona.. 597 

Coniagas Mines. Ltd., Cobalt. Ontario 203 

Consolidated Coppermlnes Co., Nevada lose 

Consolidated Mining & .smelting Co. of Canada, Ltd.... 2H 

Copper tjiu-en Consolidated Mining Co 616 

Copper liange Consolidated Co., Michigan 8/4 

Coraoba Copper Co., Ltd., Spain 715 

Crown Point Gold & Silver Mining Co., Nevada 591 

Crown Reserve Mining Co.. Ltd. Cobalt, Ontario. .. .310, yys 

Daly- Judge Mining Co.. Park City, Utah 5J8 

Daly West Mining Co.. Utah 592 

1 Detroit Copper Mining Co., Arizona t>17 

Dexter Wlute Caps Mining Co., Manhattan. Nevada 8J6 

Dome Lake M. & M. Co 351 

Dome Mlnea, Ltd., Porcupine, Ontario 864. 1036 

Dominion Steel Corporation 354 

Dragon Consolidated Mining Co., Tintic, Utah 592 

Eagle ft Blue Bell Mining Co., Utah 431 Butte Coppei Mining Co., Montana 670 

Bast Hand Proprietary Mines Co §20 

Eastern Smelting Co., Ltd., Federated Malay States 873 

El Favor Mining Co., Jalisco, Mexico 122 

Esperanza Mining Co., Mexico 993 

Falcon Mines Ltd., Rhodesia 314 

Florence Goldfleld Mining Co.. Nevada 3y4 

Franklin M. Co., Michigan 1077 

Frontlno & Bolivia (South American) Gold Mining Co., 

Colombia 832 

Globe & Phoenix Gold Mining Co.. Ltd., Rhodesia 873 

Golden Horse-Shoe Estates Co., Ltd., Western 

Australia 1U77 

Goldfleld Consolidated Mines Co 552 

Great Boulder Perseverance Gold Mining Co., Kalgoor- 

lie. Western Australia 5y7, 832 

Great Cobar, Ltd 35s 

Liieene Cananea Copper Co. and subsidiaries 954 

Guggenheim Exploration Co 304. 313 

Heuley Gold Mining Co., British Columbia 637 

Bollinger Gold Mines Co 310 

hfomestake Mining Co., Lead, South Dakota 466, 553 

Horn Silver Mining Co., Utah mo 

Hydraulic Power & Smelting Co.. Norway 357 

Indiana M. Co., Michigan 1077 

Inspiration Copper Co 706 

International Coal & Coke Co., Colemont, Alberta 592 

International Nickel Co 1025 

International Smelting & Refining Co 953 

lion Blossom Consolidated Mining Co., Silver City. Utah 235 

Isle Royale Copper Co., Michigan 669 

Ivanhoe Gold Corporation, Ltd.. Western Australia. .816. B74 

Jumbo Gold Mining Co.. Ltd.. Rhodesia 399 

Keystone C. Co.. Arizona 1065 

Lena Goldflelds, Ltd., Siberia 126 

Lonely Reef Gold Mining Co., Ltd., Rhodesia 832, 1U77 

Lower Mammoth Mining Co., Utah 236 

MacNamara Mining Co., Tonopah, Nevada 552 

Mary MeKinney Mining Co 275 

Mason Valley Mines Co 628 826 

May Day Mining & Milling Co., Utah 671 

Mclntyre Porcupine Mines, Ltd.. Schumacher, Ontario.. 1032 

McKlnley-Darragh -Savage Mining Co 629 

Mexican Gold & Silver Mining Co., Virginia City, Ne- 
vada • ' 203 

Miami Copper Co 794 

Mines Company of America 790 

Moetezuma Copper Co.. Nacozarl, Sonora, Mexico 618 

Mon tana-Ton opah Mines Co 597 

Mt. Blschoff Tin Mining Co., Tasmania 637 

Mi Morgan Gold Mining Co., Ltd., Queensland 436 

Mysore Gold Mining Co.. Ltd.. India 597 

Natomas Consolidated of California 904. 916 

Nevada Consolidated Copper Co 357. 794 

Nevada Hills Mining Co., Fair view, Nevada 436 

New Cliu-iuitambo Gold Mines, Ltd., Peru 832 

New Idria Quicksilver Mining Co., California 754 

Ntplsslng Mines. Co., Cobalt. Ontario 832 

North Broken Hill Mining Co., New South Wales, Aus- 
tralia 953 

North Butte Mining Co BT3 

North Lake Mining Co., Michigan 953, 1036 

North Star Mines Co., Grass Valley. California 631 

North Star Mining Co., Nevada 711 

Novs Scotia Steel & Coal Co 504 

Nundydroog Co., Ltd.. Kolar. Mysore. India 637 

Old Dominion Copper Mining ft Smelting Co 675 

Ontario Silver Mining Co., Park City, Utah 715 

Ooregum Gold Mining Co. of India. Ltd 832 

1 > -■ eola Consolidated Mining Co 50fi 

Paclfli G. ft E. Co., California i*>77 

Phelps, Dodge Mercantile Co 587, 618 

r Tin Mining Co.. Tasmania 832 

Vol. l(W 

MINING AM) m || Mil ic I'Kl SS 

nil I Mum Mil 

I. an road alley 

. . ' l".. 
u eillngton UIdi 

uid . Spam 
■ «ici 1 1 1 1.- Minim 

Kim n- , _ 

int •■.. . Kui livster, Ni vailu 'il 

si John .i.i He) Mining .■... i.i.i. Brail I 

■>l J,--. [■!, 1.... 1 ■ 

Mining i'.. . Chlhua ,.......!!! 

.-. n. . .i sup. i i..i silver Mines, Ltd., Cobalt, Ontario. lit 

il Mining i '" Korea l _':, LI 

i, Trough* Mining Co., Nevada ' 

nnon Coppei ma '. ' ' ; \,\ 

' ' ' 4;o 

Silver kihk Consolidated Mining Co., Utah ......'.'' 473 

Slmn Proprietary Ltd., Transvaal ' *'* 357 

ns of Qwalla, Ltd., Western Australia 

•.. African Qold Trust. I. til 

.".ni, .11 Fu.i Co., Dawson, New .\i.\i... ....'! oik 

Standard Consolidated Mining Co., Bodle, California..!! 507 

si.injurd Silver-Lead Miiiiiik Co., British Columbia.. »15 

Siiiimi Qold I'll.], 1 Co., Ltd., Sudan 715 

Sulphide Corporation, Central mine, Broken Hill, New 

SOUth W'.ll. S ;,, j 

Superior Copper .... Michigan .....'. 669 

ramarack Mining 1 Co., Michigan 669 

Tecopa Consolidated Mining Co, Tecopa, California.!!!! 129 

Tenneasee Copper Co i-.j 670 

Tewksbury Amalgamated Gold Dredging Co Victoria! 

Australia 675 

Tollmu Mlnlnu Co.. Ltd- Colombia ........!..!!!! 675 

Tom Reed Gold Mines Co.. Arizona 9ya 

Tongkan Harbour Tin Dredging Co., siam ! 203 

Toniijmii Belmont Development Co., Nevada 706 833 

Tonopah Kxtenslon Mining Co 'i'it 

Tonopah Midway Mining Co 357 

Tonopah Mining Co., Nevada ' ' 915 

Trinity Consolidated Hydraulic Mining Co.. California.'. 908 

Trinity Gold Mining & Reduction Co.. California.... 908 

Tronoh Mines. Ltd.. Federated Malay States... 'US 

Tuolumne Copper Mining Co.. Butte', Montana 590 

L nlon Mlnlere du Ham, Katanga, Belgian Congo 322 

united Globe Mines Co 675 

I'nlted Gold Mines Co V7V 675 

United States Smelting, Refining & Mining Co. .636. '666! 675 

L nited States Steel Corporation 667 784 

Utah Consolidated Mining Co ' 671 

Utah Copper Co 357 744 795 

Van Ryn Gold Mines Estate. Ltd., Rand '....' 698 

Victoria Mining Co.. Michigan 430 

Vindicator Consolidated Gold Mining Co.. Cripple Creek. 

Colorado 314 

Walhl-Paeroa Gold Extraction Co., New Zealand 832 

Wallaroo & Moonta Mining & Smelting Co., Ltd., South 

Australia 997 

Wandillgong Gold Dredging Co., Victoria, Australia!!.'! 675 

\\ ashlngton Water Power Co 310 

Wasp No. 2 Mining Co.. Flattron. South Dakota.......! 467 

Whim Well Copper Mines. Ltd., Western Australia 873 

Wllbert Mining Co., Idaho 908 

Winona Copper Co.. Michigan 590 

Wolfram Mining & Smelting Co.. Ltd., Portugal 716 

Yellow Jacket Gold & Silver Mining Co., Nevada 591 

Yuanmi Gold Mines. Ltd 126 

Yukon Gold Co , . 553 

Y- Water Tin Co.. New South Wales 873 

Compensation Act and prospecting. .Clarence K. Colvin.... 938 

And industrial accidents, Nevada 332 

And medical examination Editorial.... 518 

Insurance Fund, California State 907 

Workmen's in California and wage reductions 423 

Workmen's in Idaho Editorial.... 920 

Workmen's in Ontario 743 

Workmen's judicial rulings Editorial.... 402 

Compound Interest problems. Graphic solutions of certain. 

Horace F. Lunt 813 

Compressed air and reduction plant 423 

Air. and sinking through sand in Lake Superior 

region 1048 

Air, Progress In the application of Robert Peele 75 

Cemstock Lode. Nevada, milling plants 146 

Pumping at Gold Hill mines 652 

Concentrator, revolving canvas, section of 66 

Concrete and stamp dies 387 

Concreting the Junction shaft of the Calumet & Arizona... 579 

Condenser, surface, correct form 301 

Confidence. Victoria, Australia 675 

Concrress. mining legislation 627, 706 

Coniagas Mines. Ltd.. Cobalt 122. 231 

Company report 203 

Conlagas Reduction Co., Ltd.. Cobalt 199 

Connecticut, electric light and power-stations 221 

Conrey Placer Mining Co., Ruby. Montana 96 

Consolidated Arizona Smelting Co.. Arizona 296 

Consolidated Copoermines Co.. Elv. Nevada 

160. 355, 514, 632, 676. 834. 103S 

Cornpanv report 1036 

Wall suit 868 

Ditto Editorial 837 

Consolidated Gold Fields of South Africa, Rand 52, 229 

Costs 861 

Consolidated Langlaagte mine. Rand 70 

Consolidated Mining & Smelting Co., Ltd., British Columhla 

117, 473, 869, 1032 

Company renort 274 

Consolidated Mining Co.. Mexico 114 

Consolidated Oil Fields of South Africa. Ltd 821 

Consolidated St. Gothard iDelhll Gold Mining Co 788 

Consolidated Stone Co.. Wasatch. Utah 473 

Continental Conner Co . South Da Vota 305 

Continental Mines. Power & Reduction Co., Black Hawk. 

1 plot 11.1.. 


Continuous agitation 
< »poi 

I "I <• ■ 


Copeland, u 8., ,1. mi. of . 

Copuland s unpllng 1'.. . Colorado '.'.'.'. 

< opper, Africa, Katanga smelting 

Afrli mi; 

producl 1. .11 

An. 1 aluminum .. Iloyi .'.','.'. 

Ami electric furnace 

Arlsona production ! . ! ! ! 

Brll Ish Columbia production 

M .ni. 1. prod '.1 :: 

California production 


' lolorado, San .1 huh production . 

Edltoi 1 


I.'. ll:i. l.'il 

i" '"111- III Ml 1-7 

',."■''' ■ ke Superior district 1411 

Exports to Europe ''" ,-i. 

Flotation treatment in America 

II, 11111111 . "uisuinptlon , 

German Imports 

Great Hrimin production !! 

Idahc pi :.iii tion ... 1C? . " .. 
In IMS, Hydro and [lym-metallurgy of...'.'.'.'.'.'.'.'.'.'.'....' 

,„„„, „ . „. . , Thomas T. Read.!!! :, I 

Ingots, Royal Mint, London , , ■ , 

Japan production ...!.!! iJo," 885 

Lake Superior district In 1913 .'." .'.K.'h. Maur,,- ! ' ' HO 

Leaching and electrolytic precipitation at Chuqulcamata 

T . . „ E. A. Cappel- ii Smith.... 739 

Leaching, Development of practice Editorial u,i> 

Lra.-hing of tailing HudulL' GaM. . tVc,', |mi 1 

Market «<> S7 .) 7 r' , ... 

Market future ...... \ Mi 

Matte, converting, Old Dominion smelter " 265 

Matte, Granulating h. R. Hallett '. .' '. '. hd 

Matte production In the reverberatory furnace 

»f * .1 m . , Herbert Lang..!! 802 

Metallurgy, Transitions in Editorial 1042 

Michigan production gg 747 

Miners' strike, End of Editorial'.'. . .' 682 

Montana production 135 

Monthly production HO, 355. 514. "oH'saY, 1038 

Nevada-Douglas, leaching experiments on ores.... 

XT , . if Editorial 205 

Nevada production jog 

New Mexico production "gV 121 

Ontario production 599 

Oregon production J03 

Ores, Leaching Wilbur A. Hendryx"!! 264 

Ores, Slater leaching process for H. W. Morse. ... 181 

Peru production g72 

Porphyry ore ..!!!! 301 

Porphyry ores, and precious metals .'. ' 738 

Prices 87, 124. 162. 201, 238. 275, 276, 312, 353, 397, 

434.. 475, 512, 550, 594, 595, 635, 673, 713, 751, 752, 792, 

829, 871, 913, 949, 951, 995. 1034, 1075 

Producing states, leading 261 

Production cost, Bullwhacker Copper Co 57 

Production cost. Butte-Duluth Mining Co '. . 56 

Production, world 674 

Queensland production, 1913 793 

Smelting , go 

Smelting and Panama canal 1025 

South Australia production, 1913 1059 

Statistics Editorial. . . . 402 

Stfltistlcs, American reception abroad 268 

Tasmania production 714 

Treatment 7g4 

United States exports 863 

United States production 8, 105 

United States production in 1913 and strikes and Mexi- 
can trouble 117 

Utah production 108, 947 

Washington production 176 

Weldlein leaching process 575 

Ditto Editorial -558 

Wyoming production Ill 

Copper Belt Mining Co., Arizona 668 

Copper Giant mine, Arizona 944 

Copper King Mining Co., Chewelah Copper King Mining 

Co.. Washington 548, 592, 947, 993 

Smelting 122 

Copper Producers' Association dinner for Charles F. 

Brooker 706 

Report 124, 312, 475, 635, 829, 995 

Copper Queen Consolidated Mining Co., Bisbee, Arizona. . . . 

160, 269, 355, 514, 676, 834, 990, 1038 

And medical examination Editorial. . . . 518 

Company report 616 

Employees' Benefit Association 347 

Modern dispensary 788 

Safety First 507 

Copper Queen mine, Washington 749 

Copper Range Consolidated Mining Co.. Painesdale, Michi- 
gan 157, 160. 355, 514, 676, 789, 834, 1028, 1038 

Company report 874 

Copper River coalfields, British Columbia 390 

Copperosity group, Arizona 588 

Cordoba Copper Co., Ltd., Spain, company report 715 

Editorial 1041 

Cornwall, England, cost of dredging 41 

Labor troubles 267 

Map 27 

Mines 267 

Mines on London market 27 

New safety detonator at Edward Browning. . . . 845 

Tin ore treatment 26t 

Tin production 773 



Vol. 103 


Cornwall Ore Bank Co. 

Corona oil Co. in tamplco district, Mexico iu J 

Coronation Alining Co., British Columbia 390 

Corporations and stockholders Kditorial. . . . 279 

hiiiii, Minnesota, Ore luutj 

Coma Rica, Abangarex Cold Field Co lyy, g&l, 671, 7X1, 911 

Coat : 

Alaska, Bering River coalfield, coal mining 829, 330 

Alas a. Long Likr 1 1. »we r development 

K. P. Kennedy 180, L'JU 

Alaska. Bpeel river electro -chemical project 218 

Alaska, water-power development 150, 218, 220 

Alaska Tread well concentrate treatment cyanide plant, 

1913 1024 

American Flag mine, I'tah. treatment 34S 

Anaconda Copper Mining Co.. sulphuric acid manufac- 
ture 55 

Angelo mine. Hand, sand filling of stopes 4U4 

Ashanti Go] n poratlon Ltd.. West Africa 552 

Balaghat mine, Kolar, India, cvanidatlon 7J 

Barnes-King Development < '<>.. Montana, mining and 

milling 747 

Chinese labor Importing into 820 

Broken urn South mine, and ore treatment 

Buckeye- Belmont mine. Tonopah. Nevada 341 

Bulhvhac k'-r Copper Co. copper production 57 

Bunker Mill & Sullivan Mining & Concentrating Co. 833, 860 

Butte. Montana, mining 302 

Butte A Superior Copper Co.. Ltd 915 

Butte A: Superior mill, mining and treatment 341' 

Butte-Duluth Mining Co.. copper production 56 

■ met & Arizona, concreting Junction shaft ........ 579 

Calum-t .V Hecla Mining Co 1025 

Cananea Consolidated Copper Co., smelting 60 

Champion Reef gold mine, India, compressed air ma- 

ehine -drills 378 

Chile coal 416 

< 'oh I, anthracite mining 1064 

Commonwealth Mining & Milling Co 

Edgar A. Collins 859 

Consolidated Langlaagte. Rand, cyanldlng 71 

Copper leaching, probable 769 

Cornwall, dredging 41 

Crown Reserve Mining Co., Ontario, mining 310 

Dome Mines, Ltd 1036 

Dredging In different countries 720 

East Hand Proprietary Mines 942 

Erecting treatment plants.... M. \Y. von Bernewltz. . . . Gilt 

Franklin Mining Co., Michigan 1077 

I'rontino and Bolivia (South American) Cold Mining Co.. 

Ltd 832 

Golden Horse-Shoe Estates. Ltd., Western Australia.... 1077 

Goldfield Consolidated Mines Co.. Nevada 

71, 552, :>90. 625, 748. 94fi 

Grand Junction mill. Walbl, New Zealand, treatment... 540 

Great Boulder Pel severance Gold Mining Co.. Ltd v::' 

Holllnger Gold Mines Ltd.. Ontario 71. 310. 592. 1073 

Homes take Mining Co 

Hydraulteklng Klamath rlvei California 524 

Hydro-electric power In Alaska and Scandinavia 

Editorial 165 

Idaho, Couer d'Alene district, mining is:, 

India. Kolar gold mines 914 

Irvih - process * 79 

Johnson dredge, Seward peninsula, dredging, labor and 

fuel 9fi 

Joplin district, mining 228, 264 

soorlle fuel 147 

Kalgurll Qold Mines. Ltd.. In 1913 188 

Katanga, Africa, smelting copper 171 

Korean mining concessions, op. -rating 762 

Lake Superior district, copper production 140 

Lonely Reef Gold Mining Co., Ltd 832 

Maenamara Mining Co 562 

Malayan Peninsula, dredging In 41 

Mclntvre Porcupine Mines. Ltd.. Ontario 122, 1032 

Mexican Gold & Silver Mining Co., Nevada 203, 260. 415 

Miami Copper Co., Arizona, mining 4:. 

Milling plants. Underestimating I. F. Laucks. ... 162 

Mining brown hematite ores 460 

Missouri, Flat Kiver lead district, mining :::s 

Montana-Tonopah mine 769 

Mother Lode region. California 66, 110 

Motor truck hauling 337 

Mount Lyell Mining & Railway Co.. Tasmania, stoptng.. 45 

Mun In German works 932 

Hysore mine, Kolar, India, cvanidatlon 72 

Nevada Consolidated Copper Co 48, 685 

Nevada Hills Mining Co 71. 386. 387 

Newsboy Mining Co., Alaska, mining 347 

Nlplsslng Mines Co 832. B84 

9Slng Mines Co., Cobalt, Denny treatment, silver ores 71 

Nlplsslng mill treatment 902 

Nlplsslng low-grade mill, supplies In 1913 782 

North St;ir Mines Co., California 631 

Norway, water-power plant construction 902 

mill. Lark. Utah 122 

Ooregum Gold Mining Co. of India. Ltd 832 

Ore i inhia. dredging. Pato 

pro] 167 

Oroy;i Black Range mill, Western Australia, Leaching 

sand 663 

Ltd.. Siberia, dredging 39 

Panama canal 979 

nee mine. Kalgoorlie, mining and treatment.. 782 

■uplne Crown, Ontario 905 

and Canal tunnel. British Columbia 731 

Rand, labor on the 20 


s. Ltd.. amalgamatlon-cyanldatlon plants 

■ r ion 899 

ip'-r Co., Arizona, mining 17 

1 ■ dglng 7113 

Ir C K Hit hcock. Sr 933 

< Mountain Mining Co., Nevada, mining with 

--ound crusher 43 

Sand shafts 614 


Shamva mine, Rhodesia iui>2 

biinmer Ji Jack mine, ttand , ozti 

Snowstorm Mining Co., Idaho, stuping 4,, 

titration s Independence, Ltd.. Ciippie Creek, Colorado, 

stopmg 45 

Stripping frozen gravel 857 

L'lito Editorial 720 

Thawing frozen ground 97, m, 135 

Tennessee Copper Co aiy 

Texas, eastern, iron ore production yuo 

Tonopah Belmont Development Co 833 

Tonopah Extension Mining Co y.i; 

Tonopah Mining Co.. Nevada 915 

United States production per pound 1075 

Ctah Copper Co., steam-shovel mining 48 

Victorious mine. Associated Northern Blocks, Ora 

Banda, Western Australia 565 

Wallaroo & Moonta Mining & Smelting Co.. Ltd.. South 

Australia 819. 997 

Wasp No. 2 mine and mill, and recovery 765 

Water-power development. Alaska 180, 218, 220 

Water-power development. Norway, Sweden. and 

United States 218 

Wltwatersrand Deep mine, sand-filling stopes 939 

Yellow fever prevention 819 

Yukon Gold Co 553 

Cotton. United states exports of raw 863 

Counterbalancing hoists, Balliet system 336 

Ditto Operator 340 

Coupling, Neverleak 600 

Cover for engineers' note-books 262 

Crabs and winches, safety 360 

Craig, E. H. Cunningham, report on South African oil- 
fields 821 

Crane. W. R Mining methods in the Bering River 

coalfields, Alaska 327 

Crane, locomotive 1000 

Crawford. E. P American investments in Mexico.... 980 

Crawford, John J., death of 123 

Creighton nickel mine, Sudbury district, Ontario 744 

Cresson Consolidated Gold Mining & Milling Co., Cripple 

Creek. Colorado 156. 710 

Cripple Creek Drainage & Tunnel Co.. Colorado 747 

Criterion mine. Rhodesia 586 

Crookshank. H. T.. death of 159 

Crosse, Andrew F Assaying concentrate and black 

sand for gold and platinum 814 

Crown Mines. Ltd., Rand 52. 808, 942, 1024 

Costs 861 

Shaft sinking 625 

Crown Point Mining Co., Gold Hill. Nevada 1030 

Company report 591 

Pumping 652 

Crown Reserve Mining Co.. Ltd.. Cobalt 199, 231, 273, 

426, 827 

Company report 310, 998 

Litigation ended 864 

Crucible, graphite, safety in use 1052 

Nuii-.sklnimlng 478 

Crucibles for melting materials of high melting points.... 301 

Crushers. Gyratory v. .iaw C. T. Hutchinson.... 222 

Crushing gold ore and leaching 583 

Plants. Rhodesia 146 

Rolls v. ball-mill 301 

Theory and practice of H. W. Hardinge. . . . 226 

Wet, in ball-mills A. W. Allen 419 

Cryolite, Greenland production 860 

Cup grease and air line connections 423 

Cupellation beads. Detection of the platinum metals in.... 146 

Curie, definition 879 

Curious metal Editorial.... 757 

Cutting and welding, Oxy-acetylene 756 

Cvanamld 984 

Cyanidation cost, Mysore mine, Kolar, India 72 

Lead baits In John B. Livingston.... Ill 

Rtinohl process of rapid Editorial 798 

Solution control in A. W. Allen .... 338 

Ditto J. E. Clenneil 500 

Ditto James S. Colbath 421 

Cyanide bullion, Lake View mill, Kalgoorlie, valuing 

method 732 

Clean-up. matte from 540 

Plant, power transmission 423 

Practice, centrifugal pumps in elevating ore pulp 703 

Practice, gold appearance 1024 

Practice. Pressure and vacuum at altitude 

A. W. Allen 978 

Practice. Sirnplication of gold ore treatment 

A. W. Allen 898 

Practice, Soluble losses Harai R. Layng. . . . 891 

Practice. Zinc in precipitation boxes 703 

Relative efficiency of sodium and potassium 

G. W. Shepherd 898 

Sodium and potassium. Relative efficiency of 

C. M. Eye 660 

Solution and assay 625 

Solution, eold in 625 

Solution, gold precipitation on zinc wafers 383 

Solution pipes 301 

Solutions, testing at Lake View mill, Kalgoorlie 625 

Some unwritten history H. Poster Bain .... 580 

Cyanides, sodium and potassium Editorial.... 519 

Sodium and potassium. Relative efficiency of 

Charles Butters. . . . 520 

Cyanldlng cost. Consolidated Langlaagte, Rand 70 

Cylindrical wooden ore-passes Andrew Fairweather 257 

Cymru copper mine. Alaska 23- 

Dakln, Jr.. Fred H Replacement orebodies at the 

Gray Eagle mine 970 

Dakota Con tin ntal Coppei Co., Hill City, South Dakota. ... 467 

1 tale Iror. mine, Minnesota 125 

\..| |08 




1 1 1 



- Mlnloi Co Pmrk City, UUI) . , 


m«tal output . 

Delj IVmI Ulnlni c,, . Park City. L7Uh 

Company report 

Darling itn of 

.v Co., Salt Lake City, Utah 

Frank P .Revision of the mining law 

Ditto What in the matter wiih prospecting? 

California mlnen ami the Exposition 

Montana 666. 789. 987 

ly pity roll 1 i »; 

a'n formula, rate ■•( revolution <>i tuba-mills 663 

Day-Hrlatoi Consolidated Ulnlni Co., Ploche, Nevada 196 

Receh ra report B91 

wood Buslneas Club, South Dakota, Heidelberg prop- 
erty 467. 5S4. 9ti. mar. 

I teadn nod mill, New Mexico 670 

Dead wood Standard mine, South Dakota 941 

i diamond mines. South Africa 851 

Hlstoi 1007 

on In flotation litigation 769 

DUto Editorial 758 

...ns relating to mining 1J7. 859, 432. 555. 598, 

638. 716, 75:., ;:•:.. s:t6, 575, 955 

Decline of tin- Hand F. L. Bosqul 736 

Ditto H. s. Denny 49 

L A Valuing of dredging ground. . . . 773 

I •■■- p mine pumping and air lifts A. E. Chodzko. . . . 136 

Concentrator Co. \. Deleter Machine Co 918 

V Mln. A Smelter Supply Co 825 

Del Mar, Algernon What Is the matter with 

prospecting 1 ? 662 

D.-1 Mont.- mine. Cre.-.le. Colorado 120 

De Luse Mining & Dredging Co.. Oregon 868 

Denmark, shipbuilding in 1913 735 

Dennis. Clifford G Quicksilver production and 

prices 81 

Denny. H S Decline of the Rand. ... 49 

D. nver Engineering Works, new ore feeder 876 

Depreciation of orebodles Editorial. . . . 557 

Dfflengano mine. Guanacev) district, Mexico 592 

Desulphurizing ores without roasting. Nipissing Mines 

Co Editorial 402 

Detection of the platinum metals in cupellation beads 146 

Determination of flue-dust losses 

T. Nellson and L. Larson 929 

Of sulphur in pyrlte 579 

Detonator. New safety, at Cornwall 

Edward Browning. . . . 845 

Detroit Copper Mining Co.. Morenci, Arizona 160. 355. 

514. 676. 834, 103S 

Company report 617 

DeutSChen Platlnwerke meeting. Germany ... .Editorial. .. . 1001 

Development of leaching practice Editorial.... 960 

Development Company of America, history 985 

v. Southern Pacific Co 985. 1066 

Developments In the Shushana goldtields. . . E. F. Wann .... 179 

De Wolf. Frank W Work of the state geological 

surveys 35 

Dexter White Caps Mining Co., Manhattan, Nevada, com- 
pany report 826 

Diamond. Amsterdam. Antwerp exports to United States, 

1913 896 

And diamond mining Editorial .... 559 

As index to trade conditions Editorial.... 2 

Belgian Congo production 324 

Fields. Rush to the Hoco-Poco 856 

Impenetrability of rounded 851 

Mining in Brazil 806 

Ontario 786 

Production limitation Editorial 919 

South African production 626 

Ditto Editorial 919 

United States imports In 1912 806 

Van Zvle. Transvaal 816 

Diamond King Mining Co., Brazil 806 

Diamond-drill holes, cementing 387 

Diamond-drilling at Ajo, Pima county. Arizona 217- 

Ca rbon costs. Goldfleld Consolidated 625 

Diathermy and cancer 1064 

Diesel engine 796 

Engine. Busch-Sulzer Co. at Panama-Pacific Exposi- 

t i.>n 

Engines, steamship 'Siam' 

Ditto Editorial 

Discoveries of mines, Accidental G. L. Sheldon. . . . 

Discovery of zinc in America Charles R. Keyes. . . . 

Versus a permit system Editorial. . . . 

Versus a permit system. Revision of the mining law. 

Discovery William E. Colby. . . . 

Disease and sanitation. Joplin district 742 

Disposal of residue from Amador County mills. Califor- 
nia M. W. von Bernewitz. . . . 770 

di Villi. Edward Ching Hstng coal basin 578 

Dixon Crucible Co., Joseph, non-skimming crucible 478 

Dobbs W. S Geological sketch of property of 

Havden Gold Mines. Ltd 534 

Doctor-Jack Pot Mining Co.. Colorado 867 

Dodge, W. R Mining and washing brown hematite 

ores • 

Doe Run Lead Co. and St. Joseph Lead Co., Missouri, con- 
solidation 785 

Lirisration ■ • ■ ^Jj-j 

Dolcoath tin mine. Cornwall 46n. TIA 

Dome Extension Mining Co., Ontario 1028 

Dome Lake M. & M. Co.. Ontario 1S9. 231. 510. 869. 906. 993 

Company report • • ■ ■ 351 

Sha'-o issue 981 












Dome Mines Co., Ltd.. 

pircnn'n* On*-nHo 189. J9S. 

231. 311, 351. 396. 548. 743. 786. 1028, 1073 

Carbon cost • - ■ jjgjj 

Company report '*• lV6b 

n st, ,-i Corporation. Canad i, 

u a - Bin. ksnilth i problem ... 

balraliaa sold tnlnoa, U i.Y 


Doubi, ii. adoi Ulnea I -,,.' Waahlnrton 

il Itadlum Institute... 

>n, «.' i . \ i ... death «.f 

Dovre Mining. Co., Washington 

Dow, Stephen k . ienten< a 

Dragon Consolidated Ulnlni Co., Tin tic Utah" 


Drainage, mine. Brunswick propel Galley Call- 


Draper, David '. ......Rand ba'nkei . " 

Dredge ami heavy sparei 

Bucket .-levator, equipped with simi delivery stacker, 

Levee building with C Q 


Buckets and round tumbler '.'..'.'.'.'.'.'. 

1 o.l.l ileetrli-jillv operated 

. W. H Gardm i and u U Shi pi 1 1 

Lumber , ,- . 

Dredging, Alaska 

Alaska. Idltarod 

Alaska, placer tin .!...!" 888 

Alaska, thawing costs "17 

At OrovIIle M. \v. von Bernew'its! !!. 887 

California jq^ 

Cost in Cornwall .....".*!"! 41 

Cost In Malayan Peninsula 41 

Costs in different countries Editorial 

Costs of Orsk Gold fields, Ltd.. Siberia 

Costs, I tenons Dr. 'd Kin k Co., Shun 

Gold, abroad in 1913 Charles Janln. 

Gold and tin in 1913 Charles Janln. 

Gold, In Burma, India 

Gold, in the United States Charles Janin. 

Gold, stripping frozen gravel Editorial. 

Gold. Surinam Dutch Guiana J. B. Perctval. 

Ground. Valuing of L. A. Decoto. 

Ditto H. M. Herrlck. 

In Idaho. Winter John H. Miles. 

New South Wales, gold recovery, 1913 

Panama canal 477 

Philippine Islands 184, 265, 503, 911 

Russia in 1912. translated by William H. Shockley 894 

Santo Domingo goldflelds. Haiti Editorial .... 89 

Sleeves. B. F. Goodrich & Co 918 

Victoria, Australia 450 

Victoria, Australia, damage report 628 

Drift mining In the frozen gravel deposits of Cape 

Nome Arthur Gibson. .. . 404 

Drill holes, diamond, cementing 3S7 

Machine. Champion Reef gold mine, India 37S 

Temple-Ingersoll gasoline-air rock 400 

Drilling by rotary process 265 

Diamond, at Ajo, Pima county, Arizona 217 

Pato Mines. Ltd.. Colombia A. C. Ludlum 780 

Rock, in Lake Superior Iron mines. .P. B. McDonald.... 484 

Drills, rock, Younger generation of 241 

Driving of winding engines. Electrical 

C. Antony Ablett and H. M. Lyons 

Drucker, A. E Gold mining concessions in Korea 

Drum. Choice for steam or electrical drive 

C. Antony Ablett and H. M. Lyons 

Drumlummon controversy. Apex law in the 

Charles W. Goodale.... 368 

Duncan. Lindsay Accident prevention at the Nevada 

Consolidated 288 

Dunkin mine. Breckenridge district. Colorado, lessees 747 

Dupen. Francis, death of 948 

Durston Mining Co.. Kansas 742 

Dutch East Indies, petroleum production 714 

Dutch Ou'ana. gold production. 1913 352 

Dynamite, tamping 4G4 


Eagle & Blue Bell Mining Co.. Bingham, Utah 473. 510, 

628. 790 

Company report 431 

Earhes, L. B Agitation at Nevada Hills 386 

East Butte Copper Mining Co., Butte. Montana. ... 160, 319, 

355, 511, 676, 834. 1038, 1065 

Company report 670 

Yearly payroll 116 

East Indies, gold and silver production in 1912 164 

East Pool tin mine, Cornwall 267 

Production 773 

East Rand Proprietary Mines Co., Rand 52 

Annual meeting 942 

Company report 820 

Costs 861 

East Side mine. Nevada 121 

Eastern Lead & Zinc Co.. Lawton, Kansas 1027 

Eastern Smelting Co., Ltd.. Federated Malay States, com- 
pany report 873 

Easton. Stanlv A What is the matter with pros- 
pecting? 168 

Ehner mine, Alaska 783 

Echo mine, Murphys, California 470 

Economical sliming by grinding pans 

M. G. F. Sohnlein 847 

Erlen Mining Co.. Nicaragua 352 

Edna May mine. Western Australia 665. 862, 863 

Efficiency and specialism Specialist.... 110 

Eldorado & P'acer Counties Gold Mining & Power Co . 

California 307. 508 

Eldorado P.nnket Gold Mining Co., Ltd.. Rhodesia 586 

Minn Mlll'ng operations at the A.W.Allen.... 501 

Electric blasting In shafts with delay action evploders. . . . 

C. W. Morse. ... 216 

Current, bleli-freciuency. and cancer 1«6I 

Current sliock 106* 




Vol. 10S 


Furnace for steel production 171 

Furnace in smelting ut ores and metals 

Finn absorbed 819 

Furnace, 2ln< ore In the Editorial.... 48U 

Insulation and moisture and acid 663 

Light and power btatlona 22] 

Locomotive, Tandem 

Motors, back-geared 

Plant, National Copper Mining CO., Coeur d'Alene, Idaho 335 

Itlng of ores and metals 

Switches in gaseous mines 

Systems, cities of United States and Europe 935 

Electrical driving of winding englm Of drum.... 

C. Antony Ablett and H. M. Lyons.... 774 

Electricity and power transmission cyanide plant 423 

Blasting ore oy 188 

Electro -chemical project, Speel River w. P. Lass.... 218 

Electrolysis, refining by 819 

Electrolytic precipitation and leaching of copper at Chu- 

qutcamata E. A. Cappelen Smith.... 7S9 

Electrometallurgy in 1913 G. A. Etoush .... 61 

Elevating pulp 814 

El Favor Mining Co., Jalisco. Mexico 114. 199, 250, 889, 707 

ipany report 122 

Difficulties in ore treatment 188 

El Gallo mine, Sonora. Mexico 869 

El Globo mine. Sonora, Mexico 869 

Elk. i kilning CO., Nevada 867 

Elko Prince mine. Nevada 826 

Elkton Consolidated Mining & Milling Co., Cripple Creek. 

Colorado 156, 348, 991 

Elm Orlu Mining Co., Butte, Montana 904 

And Butte & Superior dispute 748 

Elmore vacuum process 79 

Elmores v. Minerals Separation 389 

Decision Editorial 43 It, 642 

v. Sulphide Corporation, Minerals Separation process 


El Oro Dredging Co.. Orovllle, California, Montana option. . 472 

El Oro Mining & Milling Co.. Cripple Creek, Colorado 747 

El Oro Mining & Hallway Co.. El Oro, Mexico. 388, 465, :.1U. 77^ 

El Paso Consolidated Gold Mining Co., Victor, Colorado 

156, 430. 946 

El Paso smelter. American Smelting & Refining Co.. Texas. 350 

Elspass Engineering & Mining Machinery Co., Chilean mill. 836 

El Temblor mine. Sonora. Mexico 869 

El Tlgre Mining < !o., Sonora, Mexico 869 

Continuous agitation 571 

Emergence gate P. B. McDonald 935 

'Empress of Ireland' disaster Editorial .... 1001 

End of copper miners' strike Editorial. . .. 682 

Engine, American-Ball four-cylinder triple-expansion 640 

Engineering Congress, International ... H. Foster Bain.... 14 

Experiment Station, Universities of Wisconsin and Illi- 
nois 4S0 

Reports, importance of simplicity in Editorial.... 6<9 

Engineers office Carl A. Allen 887 

Engines, Electrical, driving of winding 

C. Antony Ablett and H. M. Lyons <«4 

Gas and oil, as economic sources of power. .Editorial. . . . 130 

England, gold movements in 1918 202 

Enterprise mine. Helena. California 348 

Enterprise mine. Rico, Colorado 454 

Esperanza Mining Co., El Oro, Mexico 510 

• Company report 993 

Continuous agitation 571 

Estimation of gold, sliver, and platinum by fire assay 

G. H. Clevenger and H. W. Young.... 614 

Estrella mine. Sonora. Mexico 869 

Ethics of mine promotion J. Parke Channlng. . . . 182 

Professional J. M. Lllllgren 187 

Etta mine. South Dakota 6o5 

Eucalyptus oil, Australia 301 

Eureka Hill Mining Co.. Eureka, Utah, tailing dump 711 

Eureka mine. Cumming's station, California 866 

Evolution of suction-gas power In Western Australia 

J. C. Auldjo 147 

Excelsior Consolidated Gold Mining Co., Meadow Lake, 

California 987 

Lawsuit settled 786 

Excelsior mine. Victoria, Australia 675 

Exchequer dam 270 

Exploration Co., Ltd 465 

And Chile Copper Co Editorial 402 

Chile Copper Co.. Chuquicamata, Chile, Interview with 

Daniel Guggenheim 574 

Explosives: Black blasting powder 663 

Blasting and use of. Nevada Consolidated Copper Co. . . . 577 

Canada, legislation 864 

Excessive use of underground Editorial.... 165 

Highest efficiency 464 

'Permissible' 341 

Powder, excessive use of underground Editorial 165 

Powder kegs 663 

Powder transportation 387 

Production In 1*>1 2 Albert H. Fay 658 

South Africa production 1024 

Stopes "ii Rand 341 

Tamping dynamite 464 

United States Bureau of Mines Investigations 1068 

Of powder underground ,, R. Noblett. ... 186 

Exposition (see Panama-Pacific International). 

Extralateral rights decisions 80 

Rights under agricultural ground 301 

Eye, C. M Relative efficiency of sodium and 

potassium cyanide 660 

Fairweatber Andrew. .. Cylindrical wooden ore-passes.... 257 

Mines, Ltd., Tihodesla |86 

Company report 314 

Fab 'in, Co., Falcon, Colorado , 987 

Farmers v. smelters. T'tah Editorial.... 47? 

Farrell. .T H Prospeetlng — present and future.... 1061 

!. O What is the matter with prospecting?. ... 11 


Fatality rates Editorial 243 

Fay. Albert H Production of explosives in 1912.... 658 

Fayal Iron mine. Minnesota 125 

Federal Dredging Co.. Nevada 1068 

i Lead Co.. Missouri 663 

And American Smelting & Refining Co 587 

ral Mining *c Smelting Co., Wallace. Idaho. ..198, 231, 

473. 1071 

And American Smelting & Refining Co 514, 633 

dge at Unlonvllle, Nevada 547 

Federated Malay states, duty on exports from 260 

Mines on London market 28 

Tronoh Mines. Ltd 28, 915 

Feeder, tine ore. Screw classifier and...S. A. Worcester.... 530 

Feldspar, United States production 938 

Fellowships in metallurgy. University of Utah 886 

Fenian mine. Western Australia 665, 863 

Ferrelra Deep. Ltd., Transvaal 942 

Ferris leasing bill 784, 988 

Water-power bill 7s4 

Fifty Consolidated Gold Mines Co.. Black Hawk. Colorado.. 710 

Filing, Engineer's office Carl A. Allen 887 

Filler-press operation A. W. Allen. . . . 697 

1- UUUUoU L, Ol. IjVUIU ... >..; 

naniS) »anu tor us 

Fincn, jonn Wellington \\ nai is me mutter 

wiui prospecting? 133 

Finlay, J. K wuai is tue matter witn pros> pec ting ..... zi\> 

lire assay, intimation ot golu, sil\ei unu piaiiiium oy.... 

G. i-i. c-levenger ana a.. v» . xoun^.... 614 

Clay, Queensland pruuucuon, ljij i yij 

Uluy testing J4i 

prevention in mines n6i 

Fires, tores t, and railways -iZ6 

Mine, siuuymg by experiment 201 

First Aationai Copper Co., Coram, Cailioinia 162, d\)i 

Flint pebbles, i- JSiy 

Florence- Goldneld Mining Co., Goidneld, Nevada 234, yy- 

Compan) report 394 

Florence Mining & Milling Co., Utah los 

Florida, phosphate iyltf syu, lu3o 

Flotation anu zinc production, Broken iiui. Mew too u in 

U ales 650 

Cobar, Mew South Wales o-ii 

Copper ore treatment in America 8u 

Elmores v. Minerals Separation 389 

Litigation, .Decision in, Minerals Separation v. James 

m. Hyde 759 

Ditto Editorial. ... IBs 

Litigation, Progress of tuuilonal. ... 642 

Lloyd copper mine, New South Wales 583 

Machine, Minerals Separation 265 

Minerals Separation process. Sulphide Corporation v. 

Elmores, decision 543 

Minerals Separation process, tonnage treated 1913 331 

Minerals Separation v. James M. Hyde 7a9 

Ditto Editorial 361, 768 

Ull, Butte & Superior Copper Co 302 

Process during 1913 Edward Walker.... 79 

Tests at Mt. Morgan William Motherwell.... 1044 

Flue-dust losses. Determination of 

T. Neilson and L. Larson.... 929 

Fluorite in smelting Herbert Lang. . . . 492 

Foaming during slime agitation F. J. Glrard. . . . 817 

Fogg properties, Porcupine, Ontario 743 

Foote, A. D Battery frame. . . . 419 

Ditto What is the matter with prospecting?.... 210 

Foreign trade, Fostering Editorial. . . . 280 

Forest fires and railways 423 

Law, South Dakota 373 

Foster Cobalt Mining Co.. Ltd., Cobalt 199 

Foster fuel bill 987 

Fostering foreign trade Editorial. ... 280 

Foundation Co., New York, sand shafts 614 

Sinking through sand 1048 

France, bauxite deposits 734 

Flint pebbles 819 

Gold and silver imports 855 

Gold and silver production in 1912 164 

Iron and steel production 101 

Lead production 816 

Shipbuilding, 1913 735 

Franklin Junior mine. Michigan, copper banket in 623 

Franklin Mining Co., Demmon, Michigan 

140. 160, 355. 514, 676 

Company report 1077 

Eraser's mine. Southern Cross. Western Australia 346 

Free, E. E Gaylusslte and Its possible utilization .... 255 

Free Coinage Gold Mining Co., Altman, Colorado 991 

Freeman, Albert R., granted new trial 587 

Freeman. Lewis R. Hydro-electric power in Chile 

and Peru 333 

Freeport Sulphur Co., Bryan Heights, Texas 473, 749 

Freight rates on ores, California 155 

Rates, reduction on ores, Nevada 309 

Fremont Consolidated Mining Co., Dryton, California. .545, 990 

French, Harold Gold recovery from mint residue. . . . 535 

French Concession, Korea A. E. Drucker.... 764 

Frisco Gold Mines Co., Kingman. Arizona 307 

Frontlno and Bolivia (South American) Gold Mining Co., 

Ltd.. Colombia Company report. . . .83 2 

Fuel brlquetting In 1913 793 

Foster bill 987 

Fume, smelter and fruit trees Editorial.... 479 

Furnace, electric, for steel production 171 

Electric, power absorbed ; 819 

Electric. Zinc ore in the Editorial.... 480 

Lining 188 

Reverberatorv, Copper matte production in the 

Herbert Lang S02 

Vol. \»" 


I : 

Dredging In Burma, India 

'•■ Rudoll i . p pi . tailing . . .TO, 901 

■ n World mining district.... B80 

oardiifi. w 11 and W U tjhspard Largesi ilecirtcatlj 

i«i . 
ivltj ..( ■pvclmen gold! . '.'. 817 
iiaiiitfoti. r Lynwood. . Uumii.-** uml mining, u retru- 


Ditto ....What in the matter with prospecting?!!!! 16* 
uas uii<i «.u engines ai economic oources or power... 

Editorial 13 U 

Natural, 1 California production , . . .* sV ss.s 

extraction 738 

United States production 2S9 

Gases and ■ me iter fuin.-.s, Studied ol |yt". 

Found in coal mines 93:, 

Gasoline from mtturul gas 788 

Miio- locomotive 36o 

Q»t- P, B. McDonald 933 

irgli Stock Exchange fuiiun- 786 

Qaylord- Dante mine, Cripple Creek, Colorado 166, 308. 991 

Qaylussltt and in possible utilization. ... K. k. Ki-.-.-. . . . l\v\ 

.■•I Tin Mines. Ltd., Cornwall 115 

Gelger, \ W... How -lose can you estimate heights? 639 

Qeldennula 1 >eep, Ltd.. Hand 52 

Gemini Mining CO., Eureka, I'tuh 431, 671 

Gemmell, ft C..What la the matter with prospecting?.... 210 

Gams, Queensland production iyi3 793 

Genera] rulee for safety, Nevada Consolidated Copper Co.. 460 

Geneva mine. Arizona 487 

Genos mine, Minnesota 667 

Genoa -Sparta iron mine, Minnesota 125 

Geological Investigations at the Ivanlioe mine, at Kal- 

goorlle 816 

Notes on Port Arthur and vicinity 461 

Sketch of the property of the Hayden Gold Mines, Ltd.. 

YV. S. Dobbs 534 

Surveys, Work of the state Frank \V. De "Wolf.... 35 

Geology of Chlsana district. Alaska 659 

Of the Kalgoorlfe goldfleld C. O. G. Larcombe 699 

Reflecting microscope In mining and metallurgy 

James C. Ray 922 

Georgia, coal production 928 

Gold and sliver production 8 

German Potash Syndicate, Germany 191 

Germany, copper consumption 512. 995 

Copper Imports 264 

Gold and silver production In 1912 164 

Gold leaf Imitation 819 

Iron ore production 221 

Lead production 816 

Machlnerv trade 551 

Mining history 961 

Murex process at Bergwerks-Wohlfahrt 931 

Platinum 135, 206 

Potash exports 502, 984 

Shipbuilding 191:3 735 

Tin from scrap tin-plant 735 

Westphalia platinum deposits 930 

Ditto Editorial 206. 1001 

Gertie mining Co.. Idaho 825 

Giant Mines of Rhodesia. Ltd.. Rhodesia 586 

Gibson. Arthur. .. .Drift mining in the frozen gravel de- 
posits of Cape Nome 404 

Ditto. .. .Thawing frozen ground for placer mining.... 143 

Ditto Third Beach Line. Nome. Alaska. . . . 686 

Gibson Copper Co.. Globe, Arizona 428, 442, 1070 

Lessees' production 788 

Gillette, Cassius E Ore in sight 186 

Gilmore Mining Co., Gllmore. Idaho 472, 633 

Glrard. J. F Foaming during slime agitation.... 817 

Glroux Consolidated Copper Co., Nevada 108, 235. 826 

Glacier Mining Co.. Colorado 393 

Gladstone mine. California 392 

Glass, colorlnc with gold 625 

Glencairn Main Reef Gold Mining Co.. Ltd., Rand, costs. . . . 861 
Globe mining district. Arizona ... ."William L. Tovote..442, 487 

Globe & Phoenix Gold Mining Co.. Ltd.. Rhodesia 22, 586 

Companv report 873 

Glohe Consolidated Mining Co.. Dedriek. California 589 

Ditto Editorial 401 

Mine and mill Wallace Macgregor. . . . 290 

Gold. Alaska production 88, 154 

And platinum. Assaying concentrate and black sand for 

Andrew F. Crosse.... 814 

And silver movements 224 

Ditto Editorial 206 

And silver ore treatment in 1913. Progress in 

Alfred James. ... 70 

Ditto E. A. Julian 500 

And tin dredging in 1913 Charles Janin.... 39 

Arizona production 106 

Australasia production. 1913 1069 

Australia, mint receipts, 1913 737 

Australia production 628, 636 

Belgian Congo production 323 

Bendigo production, 1913 537 

Britisli Columbia placer production, 1913 117 

British Columbia production 202 

California production 88, 107, 588 

Canada, Klondike production in 1913 199 

Canada production 8, 911 

Carat 540 

Coin, laws In United States 860 

Coin, specific gravity 341 

Colorado. Cripple Creek production in 1913 156 

Colorado production 42, 119 

Colorado. San Juan production In 1913 157 

Colombia exports 185 

Crushing ore and leaching 583 

Dredge, Largest electricallv operated 

W. H. Gardner and W. M. Shepard 1053 

Dredging abroad in 1913 Charles Janin 183 

Dredging at Surinan, Dutch Guiana. . .J. B. Percival. . . . 733 

Jr«d«ing In lha United st.,i. , . . , . ,. . l! 

,.,,.„,, '/ ,l Clevengei end 11 u roun'i!!!! cm 

France Import! " *'""■ , '' iUt " t,lii ••• « 

Qiau coiorin* ,"!.'!;;;;;.;.;;;: js? 

p/eai Britain production ,'. 5*5 

Idaho production .'« ?£- 

in cyanide solution ! '■ JJj 

India, Kolar mines, 1913 Jilt 

Indian mines production ' ,, .^a 

d produotlon 

Korean mine* Bdltoi i 

Leaf; Imitation, Germany "' rUI '•• J?J 

Madagascar production 

Metal standard and financial confidence ' k£t 

Mining concessions in Korea A. E. Druoker!" 

Montana production '1V5 Jig 

Movements In Kngland In 1913 '.'.'. S * 

Nevada production ' i S 

N"i\v Mexico production , * * ' a« 

.Ww South WaUs recovery by dredglngigii ' * * 738 

N. w York exports ,,,'.? 

New Zealand production '.'.".'.'.'.'. V-V io76 

Nova Scotia. Canada, production 702' 879 

Ontario production ' ILi 

Ore treatment. Slmplltlcatlon of A. w\' Alien " ' ' 898 

Oregon production 103 hoi 

Panama canal zone ' 1 - 1 

Peru production ..........'. $t> 

Philippine Islands discovery 44$ 

Philippine Islands mining 911 

Philippine Islands production ...../ G 08 911 

Placers of the Maranon, Peru Editorial. 214 

Placers on the Kuskokwlm river. Alaska 

„ , , n. w. Reeth.'.. 890 

Precipitate after acid treatment 902 

Precipitation from cyanide solutions on zinc wafers.!! 383 

Production In 1913 Editorial 6 

Queensland, Charters Towers production 735 

Queensland production 1913 , 793 

Rand production 52, 398, 543 

Recovery from mint residue Harold French 535 

Rhodesia mining 535 

San Francisco mint, received in 1913 176 

Silver added In assay 819 

South Australia production 1913 1059 

South Dakota production 88, 910 

Specific gravity of specimen J. Jervis Garrard.... 817 

Standard for 663 

Tasmania production 714 

Texas production 1 10 

Transactions, Samuel Montagu & Co 996 

Transvaal mines industry 964 

Transvaal production ... 469, 942 

Union of South Africa production 626 

United States exports to Europe 1059 

United States production 8 

Utah production 108. 947 

Washington production 176 

Washington, Seattle, United States assay office receipts 198 

Western Australia production 125, 313, 505. 665 

World production in 1912 164 

Ditto Editorial 130 

Wyoming production Ill 

Gold Blossom mine, Ophlr, California 270, 866 

Gold Dirt mine, Rolllnsville district, Colorado 342 

Gold Hunter Mining & Smelting Co.. Mullan. Idaho.'. 789. 1030 

Gold King Mining Co., Cripple Creek, Colorado 156, 393 

Gold Road Mines Co., Goldroad, Arizona 668, 824, 1029 

Gold Standard mine, Oregon 868 

Golden Butterfly. Western Australia 863 

Golden Center of Grass Valley M. Co., Grass "Valley, Cali- 
fornia 709 

Golden Crest mine, South Dakota 305 

Golden Cycle Mining Co., Cripple Creek, Colorado 

120, 156, 308, 789, 825, 867, 991 

Golden Eagle claim, Golden, Alaska 193 

Golden Flint mine. Rolllnsville district, Colorado 342 

Golden Horse-Shoe Estates, Ltd., Western Australia 

313, 346. 505. 665. 688, 863 
And Ivanhoe companies' auxiliary electric circuit.... 819 

Company report 1077 

Golden Pyke mine. Bendigo, Victoria 537 

Golden Reward Consolidated Gold Mining & Milling Co., 

Terrv. South Dakota 941 

Golden Ridge mine, Western Australia 664. 665, 863 

Goldfield Consolidated Mines Co., Nevada 71, 120. 234, 

272, 394, 430, 466, 590, 632, 710. 748. 789, 946. 1072 

Ditto Editorial 90 

And Aurora Consolidated Mines Co 547, 1031, 1073 

And Moore Filter Co 1072 

Companv report 552 

Diamond-drilling 625 

Goldfields. Developments fn the Sbushana..E. F. Wann.... 179 

Santo Domingo, Haiti, dredging Editorial.... 89 

Good Enough mine, Sonora. Mexico 869 

Good Springs Anchor Co., Nevada 234 

Goodale. Charles W Apex law in the Drumlummon 

controversy 368 

Ditto Boston & Montana plant.... 897 

Ditto What ia the matter with prospecting?.... 210 

Goodall. Arthur. .California miners and the Exposition.... 298 

Goodrich Co., B. F„ belt conveyors 128 

Dredging sleeves 918 

Gore, Bancroft Lead smelting at East 

Helena, Montana 416 

Ditto Treatment of tailing at Butte 

Reduction Works 529 

Gorgas. Colonel W. G., cost of yellow fever prevention. . . . 819 

Government aid, Prospecting and Royal P. Jarvis. . . . 936 

Ditto O. E. Klrkpatrick 859 



Vol. 108 


UHto F. L. Ransome.... 736 

Ditto ." F, Sommer Schmidt.... 581 

And the individual Henry S. Hazlitt 110 

Coal mine. North Dakota o6» 

Gow, G Aubrey Ore. . . . 186 

nby Consolidated Mining. Smelting & Power Co.. Ltd., 
British Columbia I 3 160. 198, 268, 355. 894, 

i i, 648, 671, 676, 749, 834. 906. 1038. 1073 
Grand Forks smelter 198, 827 

Midas mine. Alaska 307 

. v ew smelter 827 

Granby Alining & Smelting Co., Missouri 662 

B. & H. mill experiment 1027 

Grand Central mine. Sonora, Mexico 311 

Grand Central Mining Co., Mammoth, Utah 711, wax 

Ontnd Junction mine. Waihf, New Zealand, mill treatment. 640 

Granite and crushed rock, California production 88 

Granite Gold Mining Co., Alaska 708. 1029 

Granite Gold Mining Co., Victor, Colorado 908 

Granite Mountain mine. Montana 454 

Grant. Robert D„ death of 994 

Granulating copper matte K L. Hallett. . . . 296 

Granville Mining & Power Co., Ltd*, Dawson, Yukon. ...23. 39 

Granville Mining Co.. Ltd.. dredging cost ... .Editorial ... . 721 
Graphic Mdutions of certain compound interest problems. 

Horace F. Lunt. . . - 813 

Graphite. California production 429, 788 

i Lble, safety in use 1052 

Madagascar [""duct ion 135 

Pennsylvania 301 

Grnsselll chemical Co. al Clarksburg', West Virginia 855 

I mining In Alaska and Siberia 185 

Stripping frozen Ex -Dawson He. ... 857 

Cray Copper Mining Co., Washington 911 

Cray Eagle Gold Mining Co.. Downievilh-. California. Re- 

ment orebodles Fred H. Dakin. Jr 970 

Great Boulder Perseverance Gold Mining Co.. Kalgoorlle. 

Western Australia 125, 818, 505, 665, 688, 819, 863 

Ditto Editorial 517 

I torapany report 597, 832 

Mining and treatment costs 782 

Great Boulder Proprietary Gold Mines. Ltd., Western Aus- 
tralia 1J5. 147. 313, 505. 665, 688, 862, 863 

Alaska Venture Syndicate 787 

M;i gdala-Moon light group. Victoria 665 

Great Britain, fatality rate Editorial 243 

Cold and Bllver production in 1912 164 

i [■! oductlon 816 

Mineral production history 961 

Mineral production, 1918 !»14 

Mining fatalities. 1913 914 

supply and AngU.-IVrslan Oil Co 1066 

Street accidents in 1918 Editorial. . .. 568 

Technical engineering societies growth 964 

Great Cobar Copper Co., Ltd., New South Wales, Australia, 

25, 162, 4:7. 676, B84, 1038 

Company report 358 

Magnetite In ore 761 

Troubles : 943 

Working time 128 

Great Falls smelter. Montana, Lightning arresters 22S 

Reduction works 302 

Great Flngall Consolidated Ltd., Western Australia 

125. 313. 346. 505, 665, 863 
Great Fltzroy Mines, Ltd.. Queensland, Lalokl mine. New 

Guinea 4 53, 943 

Troubles 70S 

Great Lakes, ore carriers 984 

Great Northern mine, Bendlgo, Victoria 537 

Great Western Cutting & Welding Co., portable welding 

outfit 756 

' Ireece, lead production 816 

Magnesite production 1023 

Silver production in 1912 16 1 

Green Hill-Cleveland mine, Idaho 1030 

Greene, C. P...What is the matter with prospecting?.... 701 

Greene Cananea Copper Co in, 344, 785, *23. 864. 1066 

And subsidiaries Company report .... 954 

Greene Consolidated Copper Co.. Sonora. Mexico. .823. 864, 869 

Greenland, cryolite production 860 

iy. J. W Rand banket 1020 

Grinding pans 73 

Pan, Increasing the efficiency of a John Randall.... 417 

Pans. Economical sliming by M. G. F. Sohnlein.... 847 

short zinc shaving J. B. Tregloan.... 287 

Grizzly Bear Mining ft Milling Co., Wyoming 74:* 

Grondal-KJellln Co., London, smelting tin ores 61 

Guanajuato Reduction & Mines Co 1066 

Guerrero mill. Pachuca. Mexico, tube-mill 849 

Guggenheim. Daniel. Interview with . .Progress at CIiuquI- 

camata 574 

Guggenheim Exploration Co 268. 424 

And Braden Copper Co 466 

Company report 304, 313 

Guggenheim interests in Shasta countv. California 709 

Guiana Gold Dredging Co.. British Guiana 39, 184, 733 

Gumaus Placer Co., Philippine Islands 911 

Dredge !84 

Dredging In 1913 40 

Guyot, N. E....What Is the matter with prospecting?.... 662 

Gwalla Consolidated, Ltd., Western Australia 25 

Gypsum, Great Britain production. . 914 

Gyratory v. jaw crushers C. T. Hutchinson 222 

Haiti. Santo Domingo goldflelds, dredging. . .Editorial 89 

Hall. J. M.. v. Paine. Webber & Co 786 

Hall, K. G Zinc ores and metallurgy in 1913 37 

Hallett. R L Granulating copper matte. .. . 296 

Hammer-drill 241 

Hampden Cloncurry Copper Mines, Ltd.. Cloncurrv. Queens- 
land $76, S34. 1038 

Hancock Consolidated Mining Co.. Hancock. Michigan.... 747 
Hannsn's Star mill, Kalgoorlie. Western Australia, ml.*-- 

mlll 850 


Hanover syndicate* Rhodesia 821 

Han-Yeh-PIng Iron & Coal Co.. China 1058 

Happy Ni vv Year mine, section of Third Beach t>- - 

Harding* . 11- W Theory and practice of crushing.... 826 

Harnev Peak pegmatites, Mineral resources of the — 1, II., 

Victor Zlegler. . . .604, 654 

Harqua Hala mine, Arizona 186 

Harrletvllle Star mine, Victoria, Australia 

Harter. Matthew, v. C. W. Ayres, decision 508 

Harvard University and Massachusetts Institute of Tech- 
nology co-operation Editorial. ... 318 

Hatch. F. H Rand banket.... 299 

Haulage. Motor truck F. L. Slzer 573 

Hauling by motor truck, Cost of 337 

Hauver. J. C, death of 870 

Hawkins Iron mine, Minnesota 125 

Hayden. Charles. What Is the matter with prospecting?.... 11 
Uayden Gold Mines. Ltd.. Porcupine. Ontario, geological 

sketch of property W. S, DobbS. . . . 534 

Hayden. Stone & Co.. copper statistics 1075 

Hazel Dell mine, California 195 

Hazlitt. Ht-nrv 8 Government and the individual. . . . 110 

Head-frame. Small 928 

Hecla mine, Montana 1027 

Hecla Mining Co., Burke, Idaho 198, 234, 394, 473. 789, 

946, 1030 

Hedley Gold Mining Co., British Columbia 

117. 198. 505. 510. 592 

Company report 637 

Heidelberg property, Deadwood Business Club. South Da- 
kota 467. 5S4. 941. 1025 

Heights, How <i.»se >an vou estimate?. .. .A. W. Gelger.... 539 

Helnze suit 344 

Helen iron mine, ' Intarlo 345 

Helmet type, pneurnatophors criticized 600 

Hendryx. Wilbur A Leaching copper ores. ... 264 

Hercules mine, Tasmania 303 

Hercules Mining Co.. Burke, Idaho 198. 473. 826. 1030 

Hermitage Mining Co., Arizona 232 

Heroult. Paul Louis Toussalnt. death of 870 

Herrick. H. N Valuing dredging ground. ... 1061 

HUlcrest colliery. Alberta ffi 1073 

Hill iron mine, Minnesota 125 

Hitchcock. Jr.. C. K Rock-drill repair costs, , , . 933 

Hite. H. L What is the matter with prospecting? 374 

H. U <fc S. mine. Kansas, sold 1027 

Hoco-Poco diamond fields. Hush to the 856 

Hoist. Chicago portable mine 241 

Motorcycle 216 

Hoisting at the Argonaut mine, Jackson. California 

M. W. von Bernewltz. . . . 697 

Automobile whip Editorial. ... 641 

Balliet system of counterbalancing 336 

Ditto Operator 340 

Mississippi Valley small lead -zinc mines 387 

Hoists and winding engines, Application of three-phase 

motors to C. Antony Ablett and H. M. Lyons. . . . 6S9 

Holland. Sir Thomas, and Royal School of Mines 665 

Holland. Shipbuilding 1918 73 5 

Windmill In draining 702 

Hollinger Gold Mines. Ltd.. Porcupine. Ontario 15S. 199. 

281, 126, 510, 592, 671. 749, 906. 947. 1028, 1073 

Company report 310 

Costs 71 

Fire 705 

Mill 898 

Holmes. Robert, v. St. Joseph Lead Co 394 

Homestake Mining Co.. Lead City, South Dakota 

121. 228, 231. 910 

Company report 4 66. 553 

Employees' benefits 223, 235 

New plants 305 

Taxes paid 350 

Tube-mill 850 

Veterans' Association 467 

Hook, J. S Rand banket. .. 623. 73$ 

Hoover. Mr. and Mrs. H. C, presentation of Mining and 

Metallurgical medal Editorial.... 481 

Hope Mining Co., Republic. Washington 236 

And San Poll Mining Co 548 

Horizontal duplex power pumps for high efficiency 204 

Horn Silver Mining Co., Utah Company report. ... 910 

Horse-power and steel shafting 502 

How close can you estimate heights? A. W. Gelger. . . . 539 

Howie Mining Co.. North Carolina 310 

Huanchaca des Bolivia, Companla 1060 

Huasteca Petroleum Co. In Tamplco district, Mexico 707 

Hudson Bav Mines Co.. Cobalt, Ontario 189, 431 

Mill 373 

Hugo mine, South Dakota 655 

Hull-Rust iron mine, Minnesota, United States Steel Cor- 
poration 125, 190 

Humboldt mine. Teliuride district. Colorado 908 

Hunter mine. Idaho 946 

Huntington centrifugal roller quartz mill. Improved 438 

Hunton. Home & Stevenson claims, Klrkland Lake, Ontario 273 

Huronian Belt Mining Co., Ontario 632 

Hutchlns Consolidated Gold Mining Co., Wyoming 749 

Hutchinson, C. T Gyratory v. jaw crushers 222 

Huttl (Nizam's) Gold Mines. Ltd., India 650 

Hyde, James M Murex process in a German works.... 931 

v. Minerals Separation, Ltd., decision 759 

v. Minerals Separation. Ltd., suit. .Editorial. .. .361. 643, 758 

Hvdraullc mine filling 902 

Hydraulic Power & Smelting Co., Ltd.. Norway 63 

Company report • 357 

Hydraullcklng on the Klamath river J. H. Theller 523 

Hydro and pyro-metallurgy of copper In 1913 

Thomas T. Read.... 54 

Hydro-electric power, Chile and Peru 

Lewis R. Freeman 333 

Power, nost in Alaska and Scandinavia. . . .Editorial. ... 165 

Power. Montana 1 50 

Ditto Editorial 130 

Hvglene. Industrial, as practised at Palmerton, Pennsyl- 
vania. . .*. John W. Luther 809 

V..I. 106 





Ida II Gold Mining Co., Ltd., Western Australia 665, 

,i?o>a> iil!l> . 

Clearwater national forest tlmbei sats 

d'Alana district mine) ...309. 4"2. 669. 

d'Alana district, mining chin 

i d'Alana dlatrlct. National Copper MiuthK. *'.. alet 

trie plant tilrard H. Rosenblatt.... 

Copper production it'7. 167, 

Dredging in sfintei ; John II. Miles.... 

Gllmora dlatrlct 

Qold drediclnic 

Gold production B, 107, 

Land production 107. 

Mineral production bj counties 

Mines in 1(13 

North I'. >rk district 

Phosphate area ma| 

Phosphate rork 

idui tlon 8, in?. 

Wallace water aupply and toreat Dre 

Workman'] atlon Editorial.... 

/.iin production 107. 

Mum Htli Mining Co., Wallace, Malm, abut down 

Urn Smelting Works. Trondnjem, Norway 

Illinois, coke production 

Metal production 1913 

Mineral production, 1313 

.Min i iik' conditions 

Petroleum production 168, 

stiver production 

University of, sngl irlng experiment station 

Editorial. .. . 

Imperator-Qullp Mining Co., Republic, Washington 

imperial College hi Science and Technology and Univer- 
sity of London 

Imperial Steel Works. Wakamatsu, Japan 

[ncaoro .Mines Co., Pallaya, Bolivia, mine and mill 

Francis Church Lincoln.... 
Income tax and mining companies Editorial.... 

Tax regulation 

Increasing the efllcleney of a grinding pan 

John Randall. . . . 

Independence Mining Co., Ltd., Halley. Idaho 

Index, Engineer's office Carl A. Allen 

India and sliver 

lialaghat Gold Mining Co., Ltd., Kolar 72. 650. 873, 

Burma Corporation 

Burma Gold Dredging Co 

Uurma mines on London market 

Burma .Mines. Lid.. Burma 29, 785, 

Champion Reel Gold Mining Co., Ltd 378. 398, 

502, 650, 656. 

Gold and silver production in 1912 

i rOld dredging in Burma 

Gold, Kolar production 

Gold production of mines 

Hyderabad mint, production 

Hyderabad, reservoirs 

Kolar gold mines. 1913 

Mi. a production, 1913 

Mines on London Market 

Mysore Gold Mining Co., Ltd.. Kolar 26, 72, 583, 

597, 650, 


Ooregum Gold Mining Co.. Ltd 738, 832, 

Tunnel-driving In 

Water-power resources 

Indian Springs drift-gravel min.e, California 

Indiana, coke production 

Petroleum production 

Indiana Mining Co.. Michigan, company report 

Indo-China. gold production in 1912 

Inducing capital Into mining enterprises 

Carl J. Trauerman . . . . 
Industrial accidents under compensation, Nevada '. 

Hygiene as practised at Palmerton. Pennsylvania 

John W. Luther. . . . 

Infusorial earth. California production 

Ingersoll-Rand Co.. hammer-drill 

Oil-driven air-compressors 

Temple-Ingersoll gasoline-air rock-drill 

Ingllston Consols mine. Western Australia 665, 

Ingliston Extended Gold Mines. Ltd., Western Australia. 665, 

Inspiration Consolidated Copper Co., Miami. Arizona 

155, 191. 194. 307. 317, 442, 487, 630, 708, 788, 824, 907, 

Company report 

Development and Improvements 

Institute and mining law revision Editorial.... 

Institution of Mining and Metallurgy, London, annual 

New building Editorial 

Institution of Petroleum Technologists, Inaugural meet- 
ing. London 

Insulation, electric, moisture and acid 

Interest problems, compound. Graphic solutions of certain 

Horace P. Lunt. . . . 

International Agricultural Chemical Co 

International Coal & Coke Co.. Colemont, Alberta 198, 

Company report 

International Engineering Congress. . .H. Foster Bain.... 

International Exploration Co 

International Motor Co.. Biakeslee suit 

International Nickel Co., Globe, Arizona 

Company report 

Employees' profit shares 

International Smelting & Refining Co. and Anaconda Cop- 
per Mining Co 

And Cottrell process 

Company report 


Globe. Arizona, smelter 

New smelting plant 

Intersection Mining Co., Animas Forks, Colorado 


I <>::•> 




l II 
;, i a 









3 93 






























1 n :-• r. 


Inl. I nlal.-.l 'allahan mine, Idaho 

Invincible collier] .ink.-. New South Wales ' lo<9 

lodloe, Japan ■,;., 

lion ami steel manufacturi in!!!!!!"!! 

.... ley titoughlon II 

An»i steel production In Prance 101 

Ami steel smelting, electric run,.,.. ( 3 

And steel, United States exports ol manufactures 863 

i allfornla production > ■-, jn$ 

china ore development ... Editorial 

i lerman produotlon 

Groat Britain production '..'.'.'.'.'. iill 

Japan production |J6 1035 

Melting point '.'.'.'.'. 

Mines, car dump 

Miii.s. Lake Superior, rock-drllllng.P. n m m 
Miu.s. Blnklng thrc nd in i-ak. Superior region . 

I', n Ml 1 1017 

Minnesota production it, 190 

Ontario bounty on ore "' " ' 506 

1 1 11 tar 1.1 production !..!!!!!!!! 

tire analysis, permanganate solutions ......'.'..'. 703 

me metallizing, John T. Jones Invention 989 

'»i' on l.ak.- Erie docks 674 

Philippine Islands production 'ill 

I'lg. Belgium production 477 

Pig, United States production 8, 364, 71::. x7_\ 1086 

Pyrlte, United sums produdtl 1918 711 

Russia production 

Spain production ,....! 378 

Texas or.-s, eastern 

United States in 1913 

United States production tr,x 

Iron Blossom Consolidated Mining Co.. silver City, Utah 

121. 198, 481, 871 

t ompany report 

Iron Cap Copper Co., Copper Hill, Arizona 166, 2.::. 

307. 442. 470. 788, 944 

Bird group of claims g(J5 

Iron Duke mill. Associated Northern Blocks, Western Aus- 
tralia 664 

Iron Knob, Broken Hill, New South Wales 629 

Iron Mask group. British Columbia 230 

Iron Mountain mines. California 669 

Ironbark mine, Bendlgo, Victoria 537 

Ironstone and limestone fluxes, Soutli Australia production. 

1913 1059 

Queensland production, 1913 793 

Irvln, Donald F...Air agitation by continuous method.... 571 

Irving leaching process L. S. Austin .... 77, 88 

Isabella Mines Co., Victor. Colorado 156, 308, 34S r.46, 991 

Lessees S25 

Isle Royale Copper Co., Houghton. Michigan 

140, 161, 355, 682, 906, 946. 1025 

Company report 669 

Italy, gold and silver production in 1912 161 

Industrial establishments, 1911 551 

Lead production 816 

Shipbuilding In 1913 735 

Ivanhoe Gold Corporation, Ltd., Kalgoorlle. Western Aus- 
tralia 125, 313. 505. 665. 688, 862, 863 

And Horse-Shoe auxiliary electric circuit 819 

Company report 816, 874 

Geological investigations at 816 

Grinding-pans 819 

Jackling, T>. C.What Is the matter with prospecting? .. 11 

James, Alfred Agitation at Nevada Hills »24 

Ditto. .Progress In gold and silver ore treatment in 1913 70 

Jameson Mining Co., J. B., Joplin district 1027 

Jamestown Exploration Co., California 393 

Janin. Charles Gold and tin dredging In 1913.... 39 

Ditto Gold dredging abroad In 1913 183 

Ditto Gold dredging in the United States 93 

Janin. Louis, death of Editorial. . . . 440 

Japan, copper production in 1913 337 

Ditto Editorial 205 

Fatality rate Editorial 243 

Gold and silver production in 1912 164 

Imperial Steel Works, Wakamatsu 236 

Iodine 265 

Lead production 816 

Mineral production, 1913 125, 1035 

Ditto Editorial 205 

Newspapers, China and Standard Oil Co. . Editorial. .. . 558 

Nippon Oil Co. gusher Editorial.... 1042 

Jarvis. Royal P Prospecting and government aid.... 936 

Java, General Colonial Exposition Editorial.... 402 

Jennie Sample Consolidated Mining Co., Colorado 430 

Jennings, Hennen . .Mining as a profession, including first 

stages of metallurgy 961 

Ditto What is the matter with prospecting? 11 

Jlbutal (Anantapur) India 650 

Jig, A new classifying 278 

Jim Butler Tonopah Mining Co., Tonopah. Nevada 

197, 349. 591, 711. 868, 1031 

v. West End litigation 632, 670 

Ditto Editorial 601 

John Hite mine, Htte Cove, California 709 

Johns-Manville Co., H. W., cold-water paint 918 

Johnson, A. H. W.. death of 750 

Johnson dredge, Seward Peninsula, Alaska 96 

Johnson's Reef mine, Bendigo, Victoria 537 

Jones, Fayette A What is the matter with 

prospecting? 374 

Jones, John T 'Step-furnace' invention.... 989 

Joplin district 115, 271, 309, 466 

Calamine production 100, 633 

Discoveries 862 

Labor conditions 228 

Lead production 100, 115, 633 

Lone Elm mining region 306 





Metal production approximations. 1913 Editorial 89 

Mineral production. 1913 831 

MlnlnK method's " 


production ■ • • • -, • ■ ■ • * ' - 

production for 1913 Otto Rulil 100 

itatlon and disease «Jr 

Zinc and lead prices •>"? 

Zinc ores in 1918 ■■- .^J 

Zln<- dende production l«o. •« 

Joplin. Missouri. mining costs at 264 

JOBle min.-. Rossland. British Columbia '49, 94 1 

1 1 abstract 939 

Juga iNlgerla) Tin & Power Co 903 

Julian. E. A Progress In gold and sliver ore treatment 

In 1913 60 ° 

. Extension Mining Co.. Goldn|Ul. jj^^ ,„, 

Treatment ■ J 2I« 

Jumbo Gold Mining Co.. Ltd.. Rhodesia, company report.. 399 

Jumbo No. 2 mine. Nevada, lessees ;;,••■■ '" 

Jupiter mine. Porcupine. McKlnley-Darragh-Savage Mines. 

Ltd.. Cobalt. Ontario 14*. 911 

Jupiter mine. Rand 469 

Kalgoorlle goldfield nomenclature Editorial 

Water used by mines 

Kalgoorlle & Boulder Firewood Co.. Western Australia. 

Lancefield mine 346. 504, 

Kalgoorlle & Boulder Mines Water Trust. Western Austra- 

Kalgurll Gold Mines. Ltd.. Western Australia 

125, 505, 665. 688. 

Costs In 1913 188, 

Kamloops Copper Co., British Columbia 

Kansas, calamine production 1913 

Lead production. 1913 

Mineral production. 1913 

Petroleum production 

Zincblende production. 1913 

Kansas-Mlssnuri-Oklahoma district — See Joplin district. 

Kapsan mining concession. Korea Editorial.... 

Katanga and Northern Rhodesia, geology 

Union itinera du Haut, South Africa. .Editorial 

Kavanagh-Jo Dandy mine. Cripple Creek, Colorado 

156. 308. 

,*rge mine. Michigan 

Keating. John B. .California miners and the Exposition. . . . 

Keith. W. S What Is the matter with prospecting?. . . . 

Kelly Butte quarry, Washington, blasting rock 

Kemp, J. F Rand banket.... 

Kendall. I I', death of 

Kennan. Charles T Radium and its sources. . . . 

Kennecott Mines Co.. Kennecott, Alaska 

Kennedy, B, P Long Lake power development.... 

Kennedy Extension Gold Mining Co.. Jackson. California. 

v. Argonaul 

Ditto Editorial 

Kennedy Mining & Milling Co., Jackson, California 

66. 155. 

Residue disposal 709, 

Kennedy mine. Hazel Green. Wisconsin, Mineral Point 

Zinc Co 

Kentucky petroleum production 163. 

Phosphate rock 

Kerr Lake drainage. Ontario 

Kerr Lake Mining Co.. Cobalt 

Ketahoen mine. Sumatra island, Dutch East Indies 

Keyes. Charles R Discovery of zinc In America.... 

Keys mine, California 

I.iims, Colorado 

Keyst Mining Co.. Johnson, Arizona 

Company report 

Keystone mines. Amador City. California 

Keystone drills, moving method 

Kfa Ora mine. Victoria, Australia 


Klmberley diamond mine. South Africa, history 

Kinney iron mine. Minnesota 

Klrkland Lake district, Ontario, flotation of mines on Lon- 
don exchange 

Klrkiand Lake Exploration Co. 

Kirkland Lake Proprietary. Ltd 

And Tough-Oakes 

Rurnsi-le clajma 

Prospectus for 1911 

Klrkpatrlc, O. E Prospecting and government aid.... 

Klrtley Creek Gold Dredging Co., Idaho 

Klamath river, Hydraullcking on the.... J. H. Theller.... 

Klondike, operating time In the 

Knapp. S, A California miners and the Exposition.... 

Ditto What Is the matter with prospecting?.... 

Knight's Deep. Ltd.. Rand, costs 


Knob Hill Mining Co.. Republic. Washington . 198. 236. 350, 

And San Toll Mining Co 

Komata Reefs mine. New Zealand 

Kongfiberg mines. Norway 

Gold Mines. Ltd Editorial.... 

Freni -ion A. E. Drucker.... 

Gold and silver production in 1912 


Gold mining concessions A. E. Drucker.... 

Kapsan mining concession Editorial.... 

Oriental Consolidated Mining Co 92. 122. 199. 

311. 510. 671. 911. 

Ditto A. E. Drucker 

Ditto Editorial.... 

Seoul Mining Co 122. 199. 311. 510. 671. 9is. 

Suan Concession A. E. Drucker. . . . 

Ditto Editorial 

Krupp ball-mill 

































Ball-mill troubles 

Ball-mill. Wet crushing In A. W. Allen 419 

Kyarra. Western Australia 665, 863 

Kyshtim Corporation, Ltd., Siberia 26. 179. 302, 831. 1028 


Labor camp sanitation, California Editorial. .. . 7 it 7 

Costs on the Rand , 20 

Native v. white 502 

Panama 1060 

Queensland, Australia 1024 

Unions, Butte. Montana 116. 1027. 1031. 1072 

La Cobriza mine. Mexico 199 

La Dlcha Mining & Milling Co.. Teplc. Mexico 707 

La Grande mill. Chile 683 

Lake Copper Co., Michigan 140 

Laldlaw. Walter, death of 593 

Lake Superior copper district In 1913... R. H. Maurer.... 140 

District, mine signal code 325 

District, mines activities 102S 

District, mining methods, iron mines 45 

District. Michigan, rock-drilling. . .P. B. McDonald 494 

District, sand shafts 614 

Sinking through sand In P. B. McDonald.... 1047 

Strike 196. 586 

Ditto Editorial 206. 682 

Strike, cost of r,j\ 

Strike. James MacNaughton testimony 546 

Strike. Mover deported Editorial.... 90 

Lake View & Star, Ltd., Western Australia 

125, 313, 505. 665. 688. 863 

Mill precipitation, and clean-up J. P. Caddy.... 461 

Mill, testing cyanide solutions 625 

Mill, valuing method for cyanide bullion 732 

Lake View Consols, Western Australia 665, 863 

Lake View mine. British Columbia 198 

Lally Gold Mines. Ltd., Ontario 425 

Laloki mine. New Guinea island 453, 943 

Lampazos mine, Mexico 311 

Lamps, Acetylene, for metal mines 

Frederick H. Morley.... 609 
Lancefleld mine. Kalgoorlle & Boulder Firewood Co., West- 
ern Australia 346, 504, 862 

Land, lowest and highest points in United States 902 

Withdrawals, Federal, court rulings Editorial, ... 957 

Landtield. Jerome B Ore 264 

Lands, public, report on, Franklin K. Lane. .. Editorial. .. . 90 

Public. United States, acreage 890 

United States restored to entry 398 

Lane. Franklin K., report on public lands Editorial 90 

Lang, Herbert. . .California miners and the Exposition.... 263 

Ditto Copper matte production In the re- 

verberatory furnace 802 

Ditto Fluorite in smelting 492 

Langlaate Deep mine. Rand 808 

Lansell Proprietary Mines. Bendlgo. Victoria 537 







Larcombe. C. O. G. — Geology of the Kalgoorlie goldfield. 

Largest electrically operated gold dredge 

W. H. Gardner and W. M. Shepard.. 

La Rose Consolidated Mines Co., Cobalt, Ontario 

158, 199. 506, 
Larson. C. L....Rush to the Hoco-Poco diamond fields.... 

Larson. L., and T. Neilson Determination of flue- 

dUBt losses 

La Salle Copper Co.. Calumet. Michigan 682. 

Lass, W. P Speel River electro-chemical project 

Last Chance mine. Wardner, Idaho 1030 

Lathrop. Charles G.. death of 912 

Laucks. I. F Underestimating the cost of 

milling plants 462 

La Ventania mine, Sonora. Mexico 869 

Law, mining, California State Mining Bureau bulletin.... 

Editorial 206 

Mining, revision 627 

Ditto Editorial 90. 481, 603 

Mining, revision and the Institute Editorial.... 361 

Mining. Revision of the H. C. Callahan 422 

Ditto Frank P. Davis.... 

Ditto Grafton Mason.... 

Mining. Revision of the, discovery 

William E. Colby 

Mining, Revision of, discovery v. a permit system 

Editorial. . , . 

Mining. Texas Editorial .... 

Lawrence. Benjamin B What is the matter with 


Laws, mining, codification. Smoot bill 745. 

[,awson. Andrew C. Butte ore genesis Editorial. 

Lawson. Andrew C What Is the matter with 

prospecting? 169 

Layng. Harai R Soluble losses .... 891 

Li hing and crushing gold ore 583 

And electrolytic precipitation of copper at Chuqui- 

camata E. A. Cappelen Smith .... 

Copper in Africa Editorial.... 

Copper ores Wilbur A. Hendryx. . . . 

Copper ores, experiments. Nevada-Douglas 

Editorial. . . . 

Irving process L. S. Austin ... . 

Of copper tailing Rudolf Gahl....766. 

Of zinc ore at the Afterthought mine 

Frank L. Wilson. . . . 

Practice. Development of Editorial. . . . 

Process for copper ores, Slater H. W. Morse. . . . 

Process. Irving L. S. Austin. . . . 

Weldlein copper process 575 

Ditto Editorial. . . . 558 

Lead and zinc In 1913 Editorial 681 

Arizona production 106 

British Columbia production 202 

California production 107. 589 

Colorado production 42. 119. 120 

Colorado. San Juan production 157 












Vol. 108 



I »ii Italn produi Uoi 914 

lu< Uon 107 167 

In district production in 1911 too. II6| «33 

K.inKnx production, 1911 n. 

<• II .::., 433 

■Usoourl produotlon, 1011 1 1 . 
M.. iii. in. i produotlon 

I i |.i ...In. tl. in t us 

\i.\i. ,. product ss 

Oklahoma produotlon, 1*13 ... us 


Paru produotlon 

lit, 353. 3H 

171, Oil, '.'.".i>. :■ 
luctlon umi fiiinr.- prleoa Editorial. . . . 
enaland produotlon. 1011 

Bull in .v. mi, l.iti, ,n John 11. Livingston.... 

Smelters uiiil rallnerlesj In Hi,- United States 

i'. K Blebenthal. . . . 
Itlnf in Baal Helena, Montana. . . . Bancroft Core.... 

Bouth i>iik..t i produotlon 

Toxai produotlon 

tlnlted Statoa produotlon 8. 

I't.ih produotlon 108. 

Wn.shlnglon production 


World pr,,, in, -non c. k siebenthal. , , , 

Zinc Bald, Wisconsin 150, 343. 

Leasing lilll. Ferris 7 s t 


Law for mineral inn. in 

Prospecting "mil R. \v. Brock . . . 

Ls Blanc property, Kenlwlsek, Ontario 

Ledoux, J, w Baited placers of Santo Domingo.... 

I„- Due Mining Co.. California 

Leeson. •' G Levee building with bucket elevator 

dredge equipped with stern delivery stacker 

Legislation at Washington, Mining. . .Thomas J. Walsh.... 

Lemprlere. J. T.. death of 

Lena GoldOelds, Ltd.. Siberia 26, 185, 

Bore-hole coefficients 

Company report 

Dredging coat Editorial.... 

Lenskol.- mine 

i .1 Iron mine, Minnesota 

Leonidas iron mine, Minnesota 

Leonora mine. Western Australia 

Le Rol Mines. Consolidated. Rossland. British Columbia. 

Mining & Smelting Co. of Canada. Ltd.. Trail 

273. 749, 

Le Rol No. 2. Ltd.. Rossland. British Columbia 117, 

198. 273. 510. 

Le Roy. E Water-actuated sampler. . . . 

Leschen aerial tramway, Alaska 

Leslie. E. H Buckhorn Mines Co., power plant. .. . 

Ditto Milling operations at the Commonwealth 


Ditto Mining and milling at the American 

Zinc property. Joplln 

Ditto Mining methods and practice. . . . 

Letcher. Owen Messina copper mine. Northern 


Lett. Stephen J Rand banket.... 

Levant mine. Cornwall, and 'lords' 

Levee building with bucket elevator dredge equipped with 

stern delivery stacker C. G. Leeson.... 

Lewlsohn. Adolph Capitalists' viewpoint, mining 


Liberty Bell Gold Mining Co.. Colorado 

Liberty Mining & Milling Co.. Chewelah, Wash 

Liberty Mining Co., Boise, Idaho 

Lightning arresters. Great Falls smelter stack, 


Lilllgren. J. M Assembling and erecting wooden 


Ditto Professional ethics.... 

Lime, Philippine Islands production 

Limestone. Great Britain production 

Queensland production. 1913 

Lincoln. Francis Church ... .Incaoro gold mine and mill, 

Pallaya, Bolivia 

Lindgren. Waldemar Rand banket. . . . 

Ditto W r hat is the matter with prospecting?.... 

'Lindley on Mines', publication of third edition.... 1 .... 

Editorial. . . . 

Litigation. Mining, review and forecast 

Robert M. Searls.... 

Little Banner mine, California 

Little Johnny mine. Colorado 

Little Mary mine. Missouri 

Little Pet claim. Ontario 671, 

Livingston. John B Lead salts in cyanidation. . . . 

Lloyd copper mine. New South Wales, flotation 

Locomobile, American 

Locomotive cranes 

Gasoline mine 

Tandem electric 

London market T. A. Rickard. . . . 

Royal Mint, copper ingots 

LTnderground electric railways . . 

London Arizona Consolidated Cooper Co.. Arizona 428, 

London. Australian & General Exploration Co., Ltd.. Ply- 
mouth mine. California Mother Lode 

Lone Flm Development Co., Missouri 

Lone Pine mine. Republic Mines Corporation. Washing- 
ton 236, 

Lonely Reef Gold Mining Co., Ltd., Rhodesia 585, 

Carbide consumption 

Company report 832. 

Mill treatment 

Long Lake power development E. P. Kennedy. . . . 

Longlife conveyor belt 

Longyear. E. J What is the matter with.... 


ploratlon i • ,„. 

'•'•"" l Y., u ' ., ....i the 

Plymouth mine 
■ ngeles mine, Bon< 
Louisiana petrol production 







11 'I 





2 Ml 


71' I 

































...I lb,- 


■lining Co., I'lah. , onYnany'rs 

Lui k. n.ii i mine, gon 

Lui ki Boy Sold .\liunm Co., ■ 

Lucky Tlger-Comblnallon Sold Tirre' 

Ludlum, A ■• .Drilling it Paid Mines, i i 

Lumber for dredges 

Lunlng Gold Mines Syndicate, Nevadl 

Lunlng-Idaho Mining Co., N 

Linn. Horace !•' m ; 

phage motors i" winding engines and hoist* .. 689 

i... ""," . ' ;;. Radium bin and c redo.... 780 

Luther, John w Industrial hygiene as practl 

al Palmerton, Pennsylvania gng 

Lyons, ll. M. and c. Antony Abletl Application of thri 

phase motors to winding engines and hoists. 
1 "'"; (,1, oi f drum for >team i. . 


ii. i 




Mu.-gregor, Wallace Glob.- ,„!,„. „„,i mill.... 290 

Mui'lune drills. Champion Reef gold mine. India 878 

In mining °1; 

Machinery, Germany trade ' 551 

Switzerland manufacture, 1913 "' ' 950 

Mackenzie. John II What Is the matter with 

prospecting? j ., 

Maclaren, Malcolm Persistence o'f'ore Yn deptli ! ! . . 666 

MacNamara Mining Co., Tonopah. Nevada 117 7.10 

Company report r,- , 

Mad Ox Mining Co., California !.!!!!!!'! 866 

Madagascar, gold production ' ' 131-, 

Graphite production !!!!'' ' 135 

Madrid mine, Virginia, Minnesota 667 

Magma Copper Co., Superior, Arizona 708 

Aerial tram 405 

Magneslte 301 

Greece ......" ^ 1023 

Production and United States Imports 1023 

Magnetometric survey to the Sudbury nickel deposits, ■ 

Application of the Klrby Thomas 497 

Magpie iron mine, Ontario 345 

Mahoning iron mine, Minnesota '.'.'.'. 125 

Mails, fraudulent use of Editorial!!!! 480 

Maine, electric light and power-stations ,, 2'M 

Malaguit Dredging Co., Philippine Islands ! 1032 

Malay Peninsula dredging 40 

Rubber production 819 

Malayan Tin Dredging Co., Ltd., Slam !!!!!!! 28 

Malcolmson. James W What is the matter with 

prospecting? oil 

Malm mill, Georgetown, Colorado !!'!"**' 589 

Mammoth Copper Mining Co., Kennett, California. .!.!!! ! 

,,,.»„ . 161. 233, 788 

Holt & Gregg farm 866 

Mammoth Mountain Mining Co.. Isabella, California 742 

Manganese, Great Britain production 914 

Melting point 112 

Queensland production, 1913 793 

Russia, Caucasus district production 1076 

Manhattan Consolidated. Nevada 121, 272 

Manhattan White Caps Co., Nevada .' 309 

Manica, Portuguese East Africa, Mining in 573 

Maori Queen. Victoria. Australia 675 

Maps, new topographic, United States Geological Sur- 
vey 582 

Maranon placers again Editorial .... 602 

Mararoa mine. Western Australia 665, 863 

Marble. California production 788 

MarguerUe Mining Co. and Columbia Copper Co., Idaho.... 909 

Mariposa Mines Development Co.. California 709 

Mariposa Mining Co.. Nevada 235 

Market. New York share. Review of the 

C. S. Burton 30 

Review. New York metal 87, 275, 433. 594. 751, 949 

Markets, metal Editorial.... 920 

Marmont mine. Western Australia 665 

Marriott. Hugh F Ore treatment at the Prestea 

Block 522 

Marsh Mining Co.. Burke, Idaho 867, 1030 

Marvel Loch mine. Western Australia 665 

Mary McKlnney Mining Co.. Cripple Creek. Colorado 

156, 233, 271. 308, 789 

Company report 275 

Marysville Buttes, Sutter county, California 782 

Mascot Copper Co.. Arizona 588 

Mason, Grafton Revision of the mining law.... 98 

Mason Valley Mines Co.. Yerington, Nevada 161, 268, 

356. 514, 547. 677, 834, 868, 992, 1038, 1072 

Anderson mine 427 

Company report 628, 826 

Smeltei 197, 349 

Smelter fumes 1073 

Weidlein copper leaching process 575 

Ditto Editorial 558 

Mass Consolidated Mining Co.. Michigan 140. 506. 6.82. 7 I :i 

Massachusetts Institute of Technology and Harvard Uni- 
versity co-operation Editorial.... 318 

Mastic lining for acid tanks 620 

Mathtson Smelting Co 292 

Maurer. R. H Lake Superior copper district in 

1913 140 

Maxlmelo Gold Dredging. Philippine Islands 911 

May Day Mining & Milling Co., Eureka. Utah 868 

Company report 671 

Mayflower Mining Co.. Calumet. Michigan - 344 

Drilling 987 



Vol. 108 


Mazapii Copper Co., Mexico 1 1 •* 

McAlplne, Mother Lode, California 508 

McCall, M, a., death of 183 

McDonald, P. B Emergency gate 935 

Ditto Mine oil-houses. .» . 815 

I 'in. i Ruck drilling in Lake Superior iron 

mines *94 

I iltto Sinking through sand In the Lake Superior 

region 104 7 

i »ii in Underground limber truck ... . 892 

Mclntyre Porcupine Mines, Ltd., Porcupine, Ontario 

122. 426, 906, 1073 

Company report 1032 


rose- cut "■■ 

McKlnley-Darrac Cobalt, Ontario... 

199, 236, 911 

( lompany report 629 

Jupiter mine, Po 743 

McMe rl death of 870 

Mediation In Mexico Editorial. ... Tin 

no In at ion and co a Editorial .... 518 

Meln \v. W What Is the matter with prospecting?.... 211 

Mellor, E T Rand banket.... 781 

Melting p. lints of various metals 112 

MensI -l Ida ted Gold Mines. Ltd., Western 

Australia 665. 863 

Metidlograph Louis Ross. . . . 640 

Editorial 480 

A.- <•.... Henry R.. antimony statistics 863 

Coppei Btatlstlcs 397. 752 

Tin Statistics 353, 913 

i H-.n range, Minnesota, ore marketing 469 

Messina Development Co., Ltd., Northern Transvaal. South 

Afi Ics 738, B18, 940 

.*.,[,, Transvaal, ash from boilers Bred by 

wood 341 

Copper mine Owen Letcher. ... 383 

Ri \ erberatory furnace 806 

Metal market review, New York *:. 275. 4:;;;. :.:n. ;;.i. :m:i 

IcetS Editorial 920 

Min.- accidents Editorial. . . . 207 

Mines in United States, aci I dents in 13 

Prices and markets In 1913 83 

Metallurgical and chemical engineering, nature faking.... 

Editorial 402 

Metallurgy Editorial 558 

. Fellowships In, University of Utah 886 

Mining as a profession Including ftrsl Stages of 

llennen Jennings.... 961 

Ol the California Mother Lode 

M. \V. von Bernewltz. . . . 65 

pper in 1913, Hydro and pyro 

Thomas T. Read. . . . 64 

Reflecting microscope in mining geology and 

James C. Ray .... 922 
Metals Extraction Corporation. Ltd., bisulphite zinc pro* 

cess 250 

Meta Is Recovery Co.. Nevada 868 

Metals Research Co., Mason Valley Mines Co., Weldleln 

copper leaching process 575 

MetalB in United States in 1913 886, 950 

Metcalfe, G. W California miners and the 

Exposition 384 

Ditto What is the matter with prospecting?.... 133 

Mexican Basle oil Co 34 

Mexican Gold <^- silver Mining Co.. Virginia City. 

Lda 121, 396, '170. 910 

i Company report 203 

Mill costs 260. 415 

% A. P, Coffin libel suit 509 

Mexico, American investments in E. P. Crawford.... 980 

Ditto Editorial 79S 

American Smelting & Refining Co. in 352 

And American warships Editorial. ... 129 

And The stale.-, Prospector in John Watson.... 858 

Cananea mines 993 

Coining silver 388 

Conditions In 191, 869 

Conditions in. and crisis Editorial.... 4 

Conditions in. mining In 1913 113 

i Ymdtlons In. money situation 113 

Ditto Editorial. . . . 557 

Conditions In. silver coinage and Sociedad Afinadora de 

Metales 707 

Conditions in. taxes and mine operators . . . Editorial .... 517 

Gold and silver production in 1912 164 

Gufanajuato district, mining 671 

Li ii production 816 

Map 113 

Mediation In Editorial 719 

Mineral exports Editorial. . . . 206 

Mineral production Editorial. .. .602. 1001 

Mines on London market 23 

Mining In 1911 Editorial 4 

Mining ruling 311 

Oleum industry 113 

Petroleum production. 1913 779 

ire or' Vera Cruz by Americans Editorial.... 680 

er free coinage Editorial. . . . 279 

Son or a mineral exports - 158, 352 

Tamp t co oil development 707 

ora 869 

Mexico Mines of El Oro, Mexico 592. 790 

Meyer A Charlton mine. Rand 52 

Miami Copper Co., Miami, Arizona 154. 161. 347. 356. 

142, ITT, 187, 6ft7, 514, 666, 677, 824, 835. 1039 

Company report 794 

Minip co 16 

Mlea, Canada production 914 

India in 914 

Dnlted States 301, 914. 971 

Michigan, coal production 909 

Copper mines, Lake Superior district In 1913 140 

Copper produi t ion 88, 261. 747 


Iron ore district conditions 933 

Lake Superior mines activities 1028 

Lake Superior rock drilling P. B. McDonald 4u i 

Metal production. 1913 7-9 

Silver production V 747 

Miclilgan-CtahjMinlng Co., Alia, Utah ' '■•-■> 

■ope. reifectlng Editorial 

Reflecting, in mining geology and metallurgy .J 

Midas Gold Mining Co.. Knoh, California tire 746 '788 

Midwest Oil Co., Casper. Wyoming, analysis 'of crude 

5JJJ' s , J?]" 1 *-*•■•■ \ Winter' dredging in Idaho! .' ! ! 

Mil] building In the Andes Alfred A. Watson 

Construction and operation Editorial 

Huntington centrifugal roller quartz. Improved 4'Js 

Miller Lake-O'Brien mine, Gowganda. Ontario.... ."'2*3*8 911 

Milling operations at the Commonwealth property ...... . .' 

E. H. Leslie 722 

Operations at the Eldorado Banket mine, Rhodesia...! 

Plants, comstock lode, Nevada A .\ ^ ' A "" n " " fig 

Plants, Underestimating the cost of.... I. F. Laucks 462 

Mill work at Brunswick Consolidated mine 

Mine accidents. Metal Editorial 








Administration and mine bosses Perplexed 



Bell signals ......'.'.'.'.'.'.'.'.' '" lal 

Killing, hydraulic ' 9q.> 

I ■': re prevention 531 

Fires, studying by experimenting -jci 

Locomotive. Gasoline ' ^Q0 

"' 1 -houses. p. b. McDonald!! !! 815 

Output ana assessors, Colorado Editorial 479 

Promotion. Ethics of J. Parke Charming' ! ! ! 182 

Pumping and air-lifts. Deep A. E. Chodzko 136 

Rescue telephones iso 

Signs 1 codes , ' [ ..">-, 

Mine t ^ Smelter Supply Co., v. Delster Concentrator Co. !!! ! 825 

Miner as a pioneer of civilization T. A. Rlckard 1004 

__. v - agriculturist Editorial.. .. 440 

Minera Chontalpan y Anexas, Cia.. Mexico, company re- 
port ' g-*3 

Mineral paint. United States production. 1913!!!!.'! 886 

Production statistics for 1913 88 105 

Production United States, 1913 '. . ' § 

Resources of the Harney Peak pegmatites, I. II..!!!! 

,_ . „.„ , T , Victor Ziegler 604. 654 

\\ ater. Philippine Islands production 911 

Mineral Hill Ore Reduction & Leasing Co., Cripple Creek 


'Mineral Industry', G. A. Roush chosen editor.!!!!!!!!!!! 

Editorial. ! ! 
Mineral Point Zinc Co.. Kennedy mine. Hazel Green, Wis- 

Mineral Range railway, Michigan !!!!!!!!!!" 

Minerals Separation flotation machine 

In United States 





Process, Sulphide Corporation v. Elmores 389 

Process, Sulphide Corporation v. Elmores, decision.... 543 

I "Ho Editorial 439 

Tonnage treated, 1913 3.11 

v. Butte & Superior Editorial 361. 643', 7. r ,S 

v. Butte & Superior decision 759 

v. Butte & Superior, effect of decision §23 

v. Elmores Editorial. . . . 642 

Mineral Slide mine, California, washing gravel 735 

Miners, Vocational training and Editorial.... 403 

Ditto G. McM. Ross. . . . 500 

Mines, Accidental discoveries G. L. Sheldon. . . . 454 

Acetylene lamps for metal Frederick H. Morlev.... 609 

Mines Company of America, company report 790 

in Mexico 311 

Mines Operating Co., Utah 868 

Mining, Accident prevention in Edward Ryan .... 498 

And business, a retrospection 

F. Lynwood Garrison .... 33 

And civilization Editorial. . . . 958 

Ditto Hennen Jennings. .. . 961 

And milling at the American Zinc propertv, Joplin.... 

E. H. Leslie 840 

And oil company stocks, fraudulent Editorial.... 480 

And right to condemn Editorial.... 642 

And washing brown hematite ores W. R. Dodge.... 458 

As a profession, including first stages of metallurgy. . . . 

Hennen Jennings. . . . 961 

Bills, in House 863 

Chile, revenue Editorial. ... 957 

China, new regulations Editorial. ... 1002 

Code commission Editorial .... 559 

Colombia 185 

Costs, Coeur d'Alene district 185 

Costs. Joplin 264 

Dangers 464 

Drift, in the frozen gravel deposits of Cape Nome.... 

Arthur Gibson. ... 404 

Enterprises, Inducing capital into 

Carl J. Trauerman. . . . 9S0 

Experiment stations, bill in House Editorial.... 877 

In Australia Editorial 680 

In Belgian Congo In 1913 

Svdnev H. Ball and Millard K. Shaler 320 

In Bolivia. Tin G. W. Wepfer 251 

In China : Editorial 4 40 

In the Choco district. Colombia 696 

In Manica. Portuguese East Africa 573 

In Peru in 1913 Lester W. Strauss 482 

Industry from the capitalists' viewpoint 

Adolph Lewisohn.... 383 

Law. California State Mining Bureau bulletin 

Editorial 206 

Law revision 627 

Ditto H. C. Callahan 422- 

Vol. Ii»- 



DIIIO Frank P, inula.. . Ill 

Ditto Editorial 90, 111, •- 

Ditto Oration Hi 

!_■» i lh« Institute. ' Idltoi lal 

Law, Revlel f the, dlacover) William B. Coll 

Law. Revision, Discover) v. s permit system 

editorial — 211 

Law, Tarn Editorial. . 

Law* Codification bill In Houaa 

Laws, codlfli .hi, .11. Bmoot t»l 11 745. *-'2 

Legislation at Washington Thomim J. Walsh ... 

Leglaletlon in Congress BST, 106 

Litigation, review an. I forecast..., Robert II, Bear la.. 

Machine! «8 

Method! and pra • i: u Laalla.... 43 

la in the lu-niiK River coalfield, Alaska 

u i; Crane. . 

Mexico In 1*11 Editorial 4 

ilna Editorial. . . . 877 

Southern states 785 

Stallone, experimental in metalliferous states, hill IBi 

Terma, Standardisation of will M. Coghlll.... 1B6 

Under water beda -161 

with steam-shovel 47 

Mining Corporation of Canada, Ltd 786 

Mining and Metallurgical Socletj of America, nnniuil meet- 
ing Kdltorlul.... 166 

Presentation "f Hoover medal Editorial.. ..317, isi 

Work of 11. M. Chance. ... 18 

Mining Corporation of Canada, Ltd 786 

Mining Scl.-n, ■•■ 1'iihllshlng Co.. bankruptcy. . . .Editorial. . . . 279 

Minnehaha Dredging Co.. British Guiana 184 

Minn. sola. Cuyuna range mines 667 

Iron production 125, 190 

Iron ranges map 1021] 

Meaabl Iron range 190 

Meaabl iron range, conditions 1026 

i ire honenolntlon 469 

School of Mines. Experiment Station 469 

State leases 190 

Minnesota Mines Co.. Maltland, South Dakota 305 

Mint, function of a 521 

Hyderabad, India production 260 

San Francis, 354, 470, 672, 793,1075 

San Francisco, gold received In 1913 176 

San Francisco, Gold recovery from residue 

Harold French 535 

Mints. Australia, gold receipts in 1913 737 

Coinage In 1913 163 

United States, coins made at 112 

Missoula Copper Co. and Snowstorm Mining Co 472 

Missouri, calamine production In 1913 115 

Cedar Creek district 306 

Flat River lead district mill capacity 663 

Plat River lead district, mining costs 738 

Joplln district draining land 306, 466 

Lead production 1913 115 

Metal production 1913 779 

St. Louis, nitration plant 583 

Silver production S, 831 

Zincblende production 1913 115 

Missouri-Kansas-Oklahoma district see Joplln district 

Moctezuma Copper Co., Nacozari. Sonora, Mexico 114, 

161. 356. 515. 618, 677. 788, 790, 835, 869, 1039 

Model mine. Panama-Pacific Exposition 893 

Modderfontein B. Rand 808 

Mogul Mining Co.. South Dakota, mill practice 

Jesse Simmons.... 1059_ 

Terrv mill <5 7 



Mohawk copper mine. California 

Mohawk mine, Goldfleld Consolidated Mines Co., Nevada. . . . 

Mohawk Mining Co.. Mohawk. Michigan 88, 140, 161, 

271, 344, 356. 515, 677, 747, 835, 946, 1030. 

Molder. Join, C What is the matter with 

prospecting? 374 

Molds, pouring bullion ■ 73S 

Mololna mine, Hostotlpaquillo district, Mexico 70/ 

Molybdenite ••• |<» 

Queensland 79i >. °oo 

Mond Nickel Co 497 

Process and reorganization ln oo 

Money in circulation. United States 1035 

Monitor Mining Co. and Montana-Idaho Copper Co 867 

Montagu & Co.. Samuel 951 

Functions of a mint • • ■ • "i 

Gold and silver movements 224. 99b 

Silver statistics 312. 397. 512. 597. 752. 871, 1034 

Montana, Butte district and labor unions 116 

Butte district and labor unions 116 

Butte district, copper production 1913 116 

Butte miners independent union ■„y„V ,„,, 

Butte district miners' union riots 1027, 10.JJ 

Butte district mines 272 

Butte district mines yearly payroll J Jo 

Camp Creek, niter deposit 423 

Central map ot> 

Coal production ■ ■ ■ • 

Copper production ^1'A,"" 

East Helena, lead smelting at Bancroft Gore.... 

Gold dredging 

Gold in c - ... 

Gold production »• "» 

Helena mining districts . ' J ' 

Helena. United States Assay Office 

Hydro-electric power 








Lead production j^j} 

Tvfatol nroHncttnn I'*'' 

Metal production 

Mineral Industry. 1913 ii'i:" r i''i 

New World mining district E. D. Gardner. 

Phosphate rock -•■■„. 

Silver production »• laB ' i" 

Western map 
Zinc ores in 1913 
Zinc production . 





Montana-Idaho Coppei Co, organised 

Montana Mining Co.. i.i Mining * Milium 

i '■> . i iruituummon com rovers) 

Mo nl ana T i. no |,al i Mm l ok Co., To no pah, Nevada. . . .197. 119, 

i Company report , , 

' 'OHIH 

Moor.- Fin. i CO 'in BdltOI I 

Monte » •list., mine, 8 ra, Mexico 

.mi., mill.. I'n lltornla 

Monthly copper production, . (I 

M c I; w Making ductile tina:>' 

U ■■• Filter Co. and Goldfleld Conaollu Mining 

\. Ton,, pah MininK Co. an, I Montana T I ' Mining 

'" Editorial .... 

Moose Mountain Iron mine, Ontarlc 

Morley, Frederick n loetylene tampi foi 


Morning Glory claim. Nevada, patent 

Morning < llory mine, Washington 

Morning mine, Mullah. Idaho 

Morse. IV W Electric blasting In shafts with 

action exploders 

Morse. 11. W Slater teaching procesi foi copper 


Mosquitoes, danger of killing With hands 

Mother I.ode, California, and Kennedy Extension- A i 

case Editorial .... 

And the Plymouth mine, California 

Region, California, map 65, 

Metallurgy of M. W. von Bernewltz. . , . 

Working costs 

.Mnl 1 1 ci- Li 'lie copper mine, Alaska 5S8, 708, 

Motherwell, William ........ Flotation tests at Mt. Morgan 


Motor truck, costs of hauling by 

Truck haulage F. L. Stzer. . . . 

Motorcycle hoist 

Motors, back-geared electric 

Mott. L. C Antimony: its ores, metallurgy, and uses. . . . 

Mt. Alta gravel mine, California 

Mount Blschoff Tin Mining Co., Tasmania 

Company report 

Mount Boppy mine, New South Wales 92, 

Mount Elliott, Ltd., Cloncurry, Queensland 677. 835. 

Mount Lvell Mining & Railway Co., Ltd., Tasmania 

45, 515, 677, 835. 1039, 
Mt. Morgan Gold Mining Co.. Ltd.. Queensland, Australia... 

25, 502, 625, 677, 688, 835, 

Company report 

Copper ore 

Gold mine, Queensland, Flotation tests at 

William Motherwell 


Slag and traction 

Trolley wires ; 

Mt. Rainier, Washington 

Mount Royal tunnel, Montreal, Quebec 

Mountain Park Coal Co.. Alberta, Canada 

Mountain Queen mine, Western Australia 125, 313, 

505, 665, 

Mountain Top Mining Co.. Colorado 195, 

Mudd, S. W California miners and the Exposition.... 

Mule traction, Tonopah Belmont 

Murchle mine, California 

Murex notation process 

Ditto Editorial. . . . 

Process in a German works lames M. Hyde. . . . 

Mutual Mining & Milling Co., Mexico City 

Mysore Gold Mining Co., Ltd., Kolar. India 26. 650. 

, Company report 

Mine, Kolar, India, cyanidation cost 

Mine, India, foundry 


Namqua mine, South Africa Editorial. . . . 

Naraguta Extended (Nigeria) Tin Mines, Ltd., Northern 


Naraguta (Nigeria) Tin Mines, Ltd., Northern Nigeria.... 

Narrow Gauge Railroad Co., California 

National Conduit & Cable Co. copper market future 

National Copper Mining Co.. Mullan, Idaho 271, S67, 

Electric plant Girard B. Rosenblatt.... 


Tandem electric locomotive 

National Mines Co., National, Nevada 

National Radium Institute Archibald Douglas 

National Zinc Co • ■ • 

Natomas Consolidated of California 23, 40, 93, 233. 270, 

And estimate of yield Charles M. Rolker.... 

Company report ..904, 

Ditto Editorial .... 

Dredging cost Editorial 

Natural Resources Survey of New Mexico 

Nau Aug mine. Idaho 

Nechl Mines (Colombia). Ltd., OrovlIIe Dredging Co 

Needles Mining & Smelting Co., Chloride, Arizona 

Neilson. T. and L. Larson Determination of flue-dust 

Nell Gwvnne mine, Bendlgo. Victoria 

Nenzel Crown Point, Nevada, leases 

Nerchinsk concession, Siberia, Russo-Aslatlc Corpora- 

Nevada, accidents 

Comstock lode milling plants 

Comstock lode pumping at Gold Hill mines 

Comstock lode silver production 

Copper production i°8, 

Elko district oil locations 

Fairplay district 

Freight rates reduction on ores 

Gold production 8, 





.' i a 






.: n 



29 2 
63 3 



4 23 
1 15 





























Vol. 108 


Haystack goldfleld 892 

IndUStrlal Insurance Commission 1072 

Jarbldge district - : » 

Lead production 108 

Limerick cunvnn placera 86* 

Liming dlotrlcl 4-'« 

Manhattan district gold and sllwr production. 1913.... 1-1 

. . 1-" 

Ploche mints 710 

Pol ish Investigations, United States Geological Sur- 
vey 909 

Quicksilver production 81 

Safetv Commission Editorial. ... 601 

tj First 196. 266. 309 

Ditto Editorial 129 

Silver pi oductlon 8 . 108 

: in district discovery 590 

Sutro adit. Corns tock lode 909 

ilneu 1US. 157, 197. 272. 349, 304. 472. 548. 

591, 711, 826. 868. 992. 1031, 1073 

Tonopah mines map - 833 

T«.nopah situation of mines 19* 

Workmen's i ompensation Editorial .... 131 

Workmen's compensation and industrial accidents 

Workmen's compensation payments 1072 

Fellow Pine district 349 

Zinc production 108 

Nevada Central Copper Co. small head-frame 928 

i Mining Co., Nevada 89 

Nevada Cinnabar Co.. Nevada 235 

■i.d copper Co.. Ely. Nevada 108. 

112 161 235, 306, 366, 177, 516, 677, 826. 835. 1031. 1039, 1072 

Accident prevention Lindsay Duncan. . . . 888 

And compensation law 832 

Blasting and use of explosives 5 • • 

Company report 357. . 9 4 

Copper Flat deposit ' s 

General rules for safety |ffl 

Gold and silver recovery, 1913 738 

Ore and dump train service 69$ 

Overburden stripped ''- > 

Safety First 509. 670 

Ditto Editorial 439 

Steam-shovel work 738 

Whistle signals 536 

Nevada Douglas Copper Co., Mason. Nevada 161, 349. 

35<;. 186, 677, 835. 992 

Casting I'opper property 1073 

Leaching experiments on copper ores Editorial. . . . 20d 

Nevada Hills Mining Co., Fair View, Nevada 121. 234. 

ISO, 517. 748. 909, 1072 

Agitation at L<- B. Eames 386 

, ,, Alfred James. . . . 624 

I lompany report 436 

ts tl, 387 

da Packard Mines Co 946 

Nevada State Mine Owners' Association 267 

Nevada Wonder Mining Co.. Nevada 992 

N.-verh-ak coupling £00 

New Arcadian Copper Co., Houghton. Michigan 906 

New Caledonia, nickel concessions 112 

Ore production, 1918 938 

New Chum Goldflelde, Bendlgo 537 

New Chuqultambo Gold Mines. Ltd.. Peru, company re- 
port 832 

New Era mine, Freeland, Colorado 119 

New i : ce, Bendlgo. Victoria Bjn 

New Guinea gold-dredging prospects report 

Gold production, 1913 1069 

Laloki mine *68 

New Idria Quicksilver Mining Co.. California, company 

report - -4 

New Jersey Zinc Co 150, 1069 

Industrial hygiene 809 

New Mexico, coal production 1031 

per production 88, 121, 261 

i ric light and power-stations 221 

1 rOld production 8, 88 

■ \ production 88 

Lordsburg district 395 

Mine fatalities. 1913 1031 

Mineral production In 1913 88 

Natural Resources, Survey of 693 

Silver production 8, 88 

Socorro county gold and silver production. 1913 121 

Socorro county news 472 

Zinc production 88. 121 

New Nil mine, Bendlgo, Victoria 687 

New safety detonator at Cornwall. . .Edward Browning.... 845 

New South WaU-, Australia, arbitration in Industrial 

troubles Editorial. ... 89 

Broken Hill exports 97. 913 

ken Hill hold 629 

ken Hill, mineral production. 1913 620, 738 

Broken Hill minini: claims, map 25 

Broken Hill, slime treatment 657 

Broken Hill, zinc production by flotation 650 

ductton 1913 705 

ar. flotation 341 

Firefly copper Meld 303 

silver production 1913 

overy history ion 5 

I production 628, 636 

i recovery bv dredging. 1913 

Invincible colllerv strike 1069 

Mineral production. 1913 705 

:, 1913 738 

New World mining district E. D. Gardner. ... 

New York and business outlook 231 

Gold exports 1035 

Metal market review 87. 275, 433. 594. 751. 949 

Petroleum production 163, 1037 

rket. Review of the C. S. Burton. ... 30 

Silver exports 1035 

Stock Exchange copper 666 


Stock Exchange, share transactions 996 

United States assay office 1035 

\V..i kingmen's compensation Editorial. ... 131 

New York & Honduras Rosario Mining Co 191 

New Zealand, Auckland exposition Editorial.... 205 

Auckland, Grafton bridge 860 

Dredging cost Editorial. ... 721 

Gold production 628, 636, 1069. 1076 

Mines on London market 25 

Silver production 1913 1069 

Strike Editorial 206, 317 

NewlandS act. strikes Editorial.... 1002 

Newsboy Mining Co.. Fairbanks, Alaska 347, 392 

Mill 269 

Newton mine. Chicago mountain, Colorado 348 

Nicaragua, Central America, Eden Mining Co 352 

Pis Pis mining district 332 

Tonopah Mining Co. in 352 

Nickel, melting point 112 

New Caledonia concessions 112 

New Caledonia production, 1913 938 

Ontario production 592 

Sudbury deposits. Application of the magneto-metric 

survey to the Klrby Thomas.... 497 

World control 1066 

Nickel Plate mine, Camp Hedley, British Columbia 122 

Nigeria, see West Africa 

Nimshew Ridge Mining & Development Co.. California.... 824 

Nipissing Mines Co.. Cobalt, Ontario 158, 199, 231, 

431, 506, 541, 629, 671, 869. 1032 

Company report 832 

Costs 884. 902 

Costs. Denny treatment of sliver ores 74 

I >esulphurizlng ores without roasting. . . .Editorial. ... 402 

Ijow- grade mill supply consumption, 1913 782 

Ore and residue assay. 1913 782 

Nippon Oil Co.. Japan, gusher Editorial.... 1042 

ira. George Puzzle in sulphide enrichment.... 660 

Ditto Sulphide enrichment. . . . 386 

Niter deposit. Camp Creek, Montana 423 

Nitrate. Chile production 501 

Industry, Chilean. I, II, III. .. .Lester W. Strauss. ... 972, 

1014, 1049 

Of soda purchases from Chile by United States 872 

Noble electric smelter, Heroult. California 308 

Noblett. R Use of powder underground. . . . 186 

Nome tramway, Alaska 718 

aclature, Kalgoorlie goldfleld Editorial. ... 680 

Ditto C. O. G. Larcombe 699 

North Anantapur mine. India 650 

North Arm copper mine. Alaska 232 

North Bendlgo. Bendlgo. Victoria 537 

North Broken Hill Mining Co., New South Wales. 

Australia 427 

Company report 953 

North Butte Mining Co., Butte. Montana 196. 302. 

789. 909, 992, 1027 

Company report 873 

Yearlv payroll 116 

North California Mining Co.. California 583 

North Carolina, gold and silver production 8 

Gold mining 785 

Mica production 971 

North Dakota Pumping Project, coal mine 565 

North Kearsarge mine, Michigan 271 

North Lake Mining Co.. Michigan, company report. .. .953, 1036 
North Moccasin property. Barnes-King Development Co., 

Montana 120 

North Star Mines Co.. Grass Valley. California 119, 429. 

709, 944 

Company report 631 

North Star Mining & Milling Co.. Jarbidge, Nevada 

197, 632. 868 

Company report 711 

North Thompson mine. Ontario. Canada, and Associated 

Gold Mines of Western Australia 705 

North Webb City. Missouri 584 

North West Corporation, Yukon 23, 39 

Northern California-Southern Oregon Mining Congress.... 1031 
Northern Ontario Exploration Co. and California Explora- 
tion Co 189 

Northern Ontario Light & Power Co., Fountain Fails 

plant 993 

Northern Territory. Australia, gold production. 1913 1069 

Northwest Corporation. Ltd.. dredging cost. . .Editorial. .. . 720 

Northwestern Metals Co.. Helena, Montana 626 

Norway. Christiania. mining exhibition 939 

Cost water-power development 218 

Hydraulic Power & Smelting Co., Ltd 63 

< Company report 357 

Hydro -electric power Editorial 165 

Hen Smelting Works 61 

Iron smelting, electric furnace ^63 

Kongsberg mines 713 

Mining in 1911 529 

Silver production in 1912 164 

Sulitjelma mine 179. 512. 656, 928 

Water-power plant construction. Cost 902 

Note-books. Cover for engineers' 262 

Nova Scotia, coal mining in bad repute 504 

1 told production 872 

Nova Scotia Steel & Coal Co.. company report 504 

Output 313 

Nundydroog Co.. Ltd.. Kolar. Mysore. India 1076 

Company report 637, 650 

Cyanide plant. India, chemical consumption. 1913 583 

Nutter. E. H What is the matter with prospecting? 184 

Oak Orchard Mining Co., Joplln, Missouri 466 

Oaks Co.. New Mexico 197. 310, 548. 827 

O'Brien mine, Cobalt 199 



^1»l> H ng 4U 


I pi odui < ion 


ohiu LMi umoih • ■ ■ 


1 >rlven air •com] Bis 

•' i r B Mi Donald. - 

Ounoi Gold mine, Washington 868 

>ma, calami 1 1 5 

Lead produi t Ion, 1911 

Helal produi Hon, 1913 

Miami mine* 1 1 ;, 

all n era la, production, 1*18 

Petroleum produi lion L63 

QuapaW district it, i. 

fclncblende production, 1913 

Oklahoma Kansas -Missouri district, tee Joplln district. 

Old Colon) Copper Co., Houghton, Michigan 344 

Drilling l»S7 

Old Dominion Copper Mining a- Smelting Co., Globe, 

Arlronu 166, 161, 366, 866, I3S, 142, 188, 616 

077, 70S, B86, 961, LOSS 

Blgelow suit 1067 

panj report 676 

Oliver alter, cloths, Black Oak mint-, Cullforntu 186 

Buckhorn mill 12] 

Oliver Iron Mining Co., Minnesota 667 

C&rson lake drainage 464 

Gilbert mine 1026 

Shaft sinking 464 

Ontario, claim measurement 336 

Cobalt district geological section 396 

Cobalt district mills in 1913 749 

U district mines 231, 273, 396 

Cobalt district mines consolidation 743 

Cobalt district mines in 1913 199 

Cobalt district power 979 

Cobalt production 592 

Copper production 692 

Diamonds 786 

Gold production 592 

Iron ore bounty 506 

Iron production 592 

Kerr lake drainage 993 

Mining districts map 189 

Nickel production 592 

Pearl Lake mines amalgamation 273 

Porcupine district 905 

Porcupine district fire 310 

Porcupine district map 534 

Radium bill 629 

Silver ores 902 

Sliver production 592 

Sudbury district map 351 

Sudbury nickel deposits, Application of the magneto- 
metric survey to the... Klrby Thomas.... 497 

Workmen's Compensation Act 743 

Ontario Mines Co 789 

Ontario Mining Co., Kellogg, Idaho 1030 

Ontario Silver Mining Co., Park City. Utah, company re- 
port 715 

Ooregum Gold Mining Co., Ltd., Kolar, India 650, 1076 

Company report 832 

Recovery 738 

Opal, New South Wales, 1913 738 

Queensland production, 1913 793 

Ophlr Gold Dredging Co., Oroville, Cal., and heavy 

spares 188 

Ophlr Silver Mining Co., Virginia City. Nevada 670, 910, 

1072, 1073 

Opp Mining Co., Jacksonville, Oregon 670 

Ora Bella mine, Arizona 630 

Ore G. Aubrey Gow. . . . 186 

Ditto Jerome B. Landfield. . . . 264 

Ditto Forbes Rlckard 385 

Ditto T. A. Rickard 463 

Ditto Venturesome 582 

Beneflciatlon, Minnesota 469 

Feeder, New 876 

Genesis, new theories and amateurs Editorial.... 401 

In depth, persistence of Editorial. ... 557 

Ditto Malcolm Maclaren 566 

In sight Casslus E. Gillette 18.6 

Occurrence at the Cloverdale mine 

Leroy A. Palmer 812 

Production of Joplln district for 1913 Otto Ruhl 100 

Sacks. Filling T. R. Archbold 659 

Transport In Rand mines 808 

Treatment and a transparent liquid 738 

Treatment at the Prestea Block. . .Hugh F. Marriott. . . . 522 

Orebodies below water beds 464 

Oregon Bureau of Mines, field work 670 

Coal production 591 

Copper production 103 

Gold production 8, 103, 591 

Illinois valley mines 197 

John Day district 827 

Lead production 103 

Metal production 103 

Mineral production value 946 

Mineral resources 591 

Mining in 548 

Newport gold discovery 748 

Platinum production 591 

Sliver production 8, 103, 591 

Ore-passes, Cylindrical wooden .. .Andrew Falrweather. . . . 257 

Oriental Consolidated Mining Co., Korea 92, 122, 199, 

236, 311, 510, 671, 758, 911, 993 

Ditto A. E. Drucker. . . . 762 

Ditto Editorial. . . . 758 

Original Mining Co., Merced, California 709 

1 >i ■■ Bonlta mine, 430 

Ore Hond Ine, South 1 »akol 

- ironogo Circle Mining 

Oroville Dredging *'>> . Ltd., and it- futun 16« 

la ifornla 

Net hi Mines, Ltd . Col bla 

Pato Mint ■ . Ltd . Colombia 

1 'ro w ..i, 1 Light A Powei Co. d red 112 , r. 

nidiiiK win, dredge 11 ajj 

O'Rourke, Mtcha '•.]■• 

k Range mill, w ■ tei n Australia, l.>«.-hing 


Links, Ltd . Western Australia. - - 

Gold fields, Ltd., Siberia -,; ->6 

1 "redglng ' " 3fl 

D nlels Co., Arizona ■,(»; 

■ I dated Mining Co., Oaceola Michigan. 
140, 167, 161, 871, ::i:>. 866, 606, 61 
D . _ I0S6, 1039 

Rope haulage 540 

1 1 eola Lead & Zinc Co 

» tsgood mint-. California ., ., 347 

1 tsmlrldum, Tasmania, nuggets 

1 1 "-luctlon 

Our contributors Editorial..., 3 

Outlook Editorial 621 

( >vf rlook Mining & Development Co.. Idaho 308 

1 twens Valley, Victoria, Australia 675 

Oxy-aoetylene welding and cutting :;,.; 

Pachuca, leaching of gold and silver ores 

Pacific coast and Panama canal free tolls. ... Editorial ... . 

Pacific Coast Borax Co. and Borax Consolidated, Ltd 


Pacific Gas & Electric Co., California, company report 

Pacific Mines Co., Mogollon, New Mexico 

Paine, Webber & Co., v. J. M. Hall 

Paint, cold water 

Mineral, United States production, 1913 

Palmer, Leroy A Ore occurrence at the Cloverdale 


Panama canal Editorial .... 

Canal and copper smelting 

Canal, cost 

Canal, Cucaracha slide, Culebra cut 

Canal, excavation 

Canal, free tolls and Pacific coast Editorial 

Canal, Gatun lake, poisoning water hyacinths 

Canal, probable tonnage 

Canal, working force 

Canal Zone, gold In 

Canal Zone, labor 

Panama Pacific International Exposition, California min- 
ers and the F. W. Bradley, Arthur Goodall, 

Louis Rosenfeld, John F. Davis, S. A. Knapp. . . . 

Ditto Herbert Lang. . . . 

Ditto G. W. Metcalfe, S. W. Mudd, Pierre Bouery, 

Harold T. Power, John B. Keating 

Ditto Charles E. van Barneveld 

California mining exhibit Editorial 

Model mine 

Paper, fitted to uses 

Papua, see New Guinea. 

Paracale Bucket Dredging, Ltd., Philippine Islands 

Patagonia Mining & Development Co., Arizona 

Patents decision, Brown 

Recent 315, 437. 478, 556, 638, 

Pato Mines, Ltd., Colombia 

Drilling A. C. Ludlum.... 

Pearl Lake Gold Mines, Ltd., Ontario 

Pearl mine, Republic Mines Corporation, Washington 

Peele, Robert Progress in the application of com- 
pressed air 

Pegmatites, Mineral resources of the Harney Peak, I, II. . . . 

Victor Ziegler 604. 

Pembroke, H What Is the matter with prospecting?. . . . 

Penn-Canadian Mines, Ltd., Cobalt, Ontario 

Pennsylvania, anthracite coal production . . . .Editorial. . . . 

Bureau of Mines building, Pittsburgh 

Coke production 


Industrial hygiene as practised at Palmerton 

John W. Luther'. . . . 

Petroleum production 163, 

Scranton, mine cave-ins 

Penrose, Jr., R. A. F What is the matter with 


Percival. J. B Gold dredging at Surinam, Dutch 


Perigo mines, Gilpin, Colorado 

Perkins, H. C What is the matter with prospecting?. . . . 

Permanganate solutions, iron ore analysis 

Permit versus discovery system Editorial. . . . 

Perrin. William R.. death of 

Persia, oil deposits 

Persistence of ore In depth Editorial. . . . 

Ditto Malcolm Maclaren .... 

Peru and Chile, Hydro-electric power In 

Lewis R. Freeman.... 

Backus & Johnston Co 

Central map 

Cerro de Pasco Mining Co 160, 352, 355, 482. 514, 

676. 834, 

Cerro de Pasco smelting plant Spencer Bishop. . . . 

Gold placers of the Maranon Editorial .... 

Mineral production, 1913 

Mining in 1913 Lester W. Strauss. . . . 

Peruvian Exploration Co 485, 

Zorritos petroleum plant 


94 6 

















Vol. 108 


Gold Placers, Inc Editorial 844 

Ma ran i tn placers Editorial. . . . 602 

Peruvian Exploration Co.. Peru 485, 911 

Peterson Lake Silver Cobalt Mining Co.. Ltd.. Cobalt. 

425, 1*4 7 



Appalachian oil production, 1913 1037 

production 88, 301, 588. 746. 914 

stat I sli.s 545 

Ida, Alberta, Calgary oil and gas discovery 

943. 988, 993 

Editorial 919, 1002 

ida, oil regulations 426 

China resources and Standard Oil Co Editorial.... 440 

Ids Oil analysis, Midwest Oil Co 738 

ide oil, distilling and Iron retorts 188 

li East Indies production Til 

t Britain oil supply and Anglo-Persian Oil Co 1065 

Illinois production 349 

Institution of Petroleum Technologists, inaugural meet- 
ing;, London G I 8 

; n kerosene oil production 1 035 

Japan. Nippon Oil Co. gusher Editorial.... 1042 

.lap tlon 185 

Mexico 113 

Oil and gas engines as economic sources of power 

Editorial 130 

Oil fuel, cost. Mother Lode region, California 66 

(■(i Industry outlook 987 

placer locations. Smith v. Union Oil Co. 80 

on shale, Great Britain production 914 

Situation In 1913 164 

Oil weiis. reviving- 846 

i production 872 

Russia, oil production 502 

Scotch mineral oil companies, production. 1913 769 

South Africa prospects 821 

Southern Pacific and Burke oil land suit 

Editorial 1041 

TamplCO, Mexico 707 

United states production 163, 963 

Venezut la oilfield 187 

World production. 1913, principal countries 779 

Dodge & Co., Inc 161. 356. 515, 677, ^:!5, 1039 

Co npany report 587 

Properties, Work rn 1913 616 

Phelps, Dodge Mercantile Co., company report 618 

-lands. Bureau of Science 911 

40, 184. 265, 503, 911 

Dredging cost Editorial. . . . 721 

Gold discovery 449 

i mining 911 

Gold production 8, 503 

Malagull i tredgtng Co 1032 

Manila stuck exchange 508 

Mineral production 1918 911 

Northern, map 503 

Silver i iuction 8 

es, Ltd 265 

Philip? >i " Dredging Syndicate. Philippine islands 911 

Phoenix Gold" & Copper Mining & Milling Co.. Wash- 
ington 711 

Phoenix mine, Arizona TIG 

i e, Victoria, Australia • H 7 r> 

Mines (Cornwall), Ltd 267 

Idaho, Utah, and Wyoming, map 351 

Rock reserves, United States 1035 

United States production. 1913 890 

Plcher Lead Co., Miami. Oklahoma 7 1 l' 

Plckands-Mather Co 169 

Picks tone mine. Rhodesia 586 

Plerce-Arrow motor truck F. L. Slzer. . . . 573 

Pllot-Butte Mining Co.. Butte. Montana 116, 391. 826 

Yearly payroll 116 

i r. Glftord, conservation report 9SS 

Tree mine. California 709 

r iron mine. Minnesota 125 

>nsolldated Mines Co.. Nevada 710 

■ r Tin Mining Co., Tasmania, company report 832 

I iss of head as result Of friction 703 

Pis Pis mining district, Nicaragua 332 

Pitchblende 885 

1 don i" t 

"res. geologv 9 15 

Pitt Iron Mining Co.. Minnesota 190 

3 in Colorado 1071 

Silver Peak Gold Mining Co.. Blair, Nevada 1072 

Plxley & Abell gold statistics 202 

Silvi ■ :s 201. 238, 276, 353, 673, 718. 913 

Placi ixlboo district. British Columbia, disputed. 192 

Ground, valuing- Editorial. ... 757 

Mining, Alaska i g \ 

Miii. i nla 107 

Washington 473 

Mining, Thawing frozen ground for.. Arthur Gibson.... 148 

Patents. L'nuicld-Cheniical Co. cases SO 

Santo Domingo I. W, Ledoux.... 280 

Plant- Coi -cttng treatment. M. W. Won Bernewitz 619 

Und< ing the cost of mlll'ng. . . . 1. F. Laucks... 462 
Assaying concentrate and black sand 

for Andrew F. Crosse. ... Si + 

(Helen t of expansion 984 

Estimation by tin 

G. ti Clevenger and H. W. Young.... 61 i 

Germany jag 

rmany, Westphalia deposits 

Ditto Edit. .rial 206, 1001 

Metals, Detection In cupellation beads i w, 

Cl ion 

■ is industry, revival 

Plumbai 415 

consolidated Gold Mines. Ltd.. Calif i 

Ko. 515 i 


Mine, Mother Lode, California, London, Australian & 

General Exploration Co.. Ltd 109 

California Exploration Co., California 903 

Pneumatophors. heAmet type criticized 600 

Pogue, Joseph E..T Technology of turquols.... 285 

Polaris mill, Arizona tube-mill 850 

Poor Farm Dredging Co., Ruby. Montana 96 

Porcupine Crown Mines, Ltd., Cobalt, Ontario 

189, 310, 426, 510 

Company report 998 

Condition of property 905 

Porcupine Gold Mines, Ltd., Ontario, sale to Porcupine 

Vlpond Mines. Ltd 906 

Porcupine Vlpond Mines, Ltd., Ontario, and Porcupine Gold 

Mines. Ltd 906 

Porepunkah mine, Victoria, Australia 675 

Porphyry Hill mine, Porcupine. Ontario 310. 743 

Port Arthur and vicinity. Geological notes on 

Warren D. Smith 461 

Port Davey Tin Mines, Tasmania leases 303 

Portable mine hoists. Chicago 241 

Portland Canal Tunnels. Ltd.. British Calumbla . . 198, 389. 869 

Tunnel Lloyd C. White 731 

Portland cement production 239, 674 

Portland Gold Mining Co., Cripple Creek, Colorado 

156, 308. 348. 789. 991 

Company report 358 

Porto Rieo. gold and sliver production 8 

Portugal, gold and silver production In 1912 164 

Portuguese East Africa, Mining in Manica 573 

Potash. German Syndicate 191 

Germany exports 502, 984 

Production and borax prices Editorial.... 838 

Prospecting, Railroad Valley Co Editorial.... 797 

United States Imports 1037 

Potassium and sodium cyanides Editorial.... 519 

And sodium cyanide. Relative efficiency of 

Charles Butters 520 

Ditto CM. Eye 660 

Powder, see explosives. 

Powdered coal In metallurgy Editorial.... 603 

Power. Harold T California miners and 

the Exposition 384 

Power & Mining Machinery Co. tube-mill 316 

power City Oil & Natural Gas Co., Montana 789 

Power plant. Buckhorn Mines Co E. H. Leslie 1010 

Transmission, cyanide plant 423 

Precipitation and clean-up at the Lake View mill 

J. P. Caddy 461 

Premier Diamond Mining Co., Ltd., Pretoria, Transvaal, 

company report 597 

Mine, and Union of South Africa Editorial 1041 

Preparatory work of the Alaska Gold Mines Co 800 

Prescott Steam Pump Co.. Fred M.. horizontal duplex pump 204 

Presentation of the Mining and Metallurgical medal 

Editorial 481 

Pressure and vacuum at altitude A. W. Allen. . . . 978 

Prestea Block A.. Gold Coast Colony, West Africa 22 

Ore treatment at r ... .Hugh Marriott. ... 522 

Prince Consolidated Mining & Smelting Co., Pioche, Nevada 

710, 992, 1072 

Princess Dagmar mine, Bendigo, Victoria 537 

Production statistics: 

Alabama, coal. 1913. U. S. Geol. Surv 1037 

Alabama, coke. U. S. Geol. Surv : 928 

Alaska, copper. U. S. Geol. Surv 261 

Alaska, minerals. U. S. Geol. Surv 8, 88, 154. 261 

Appalachian oil. 1913, U. S. Geol. Surv 1037 

Arizona minerals, 1913, U. S. Geol. Surv 106, 261 

Arkansas minerals, 1913. U. S. Geol. Surv 830 

Australasia gold. 1913 1069 

Australasia silver. 1913 1069 

Australia gold 628. 636 

Belgian Congo, diamonds 324 

Belgian Congo gold 323 

Belgium pig iron 477 

British and Dutch Indies petroleum. 1913 779 

i British Columbia minerals 202 

California graphite 429 

California Iron 429 

California lead ore. U. S. Geol. Surv 589 

California minerals, 1913 588, 788 

California minerals. U. S. Geol. Surv 88, 107, 261 

California petroleum 914 

Canada, Alberta, coal 629 

Canada, gold 911 

Canada, mica 914 

Canada minerals 8 

Central states. 1913. U. S. Geol. Surv 830 

Chile, nitrate 501 

Colorado, Aspen district, minerals, 1913 120 

Colorado. Breckenrfdge district, minerals, 1913, U. S. 

Ge .1 Surv 12H 

Colorado, Chaffee county minerals, 1913 119 

Colorado, Clear Creek county metals, 1913 119 

Colorado, copper. U. S. Geol. Surv 261 

Colorado. Creede district, minerals. 1913 120 

Colorado. Cripple Creek gold production, 1913 156 

Colorado. Eagle count v metals 119 

Colorado, Leadville district minerals. 1913 119. 155 

' Ditto, I". S. Geol. Surv 119 

Colorado, mineral value Editorial. . . . !>'."> 

Colorado minerals 100. 261 

Ditto, U. S. Geol. Surv 633 

Colorado mines, T". S. Geol. Surv 42 

Colorado, Ouray county minerals, 1913 157 

Colorado. San Juan minerals, 1913 157 

Cornwall, tin 77:; 

Dutch East Indies, petroleum 714 

Dutch Guiana, gold, 1913 352 

Oaltcla. petroleum. 1913 77:* 

Georgia, coal. U. S. Geol. Surv 929 

Great Britain minerals. 1913 911 

Greece, magneslte 1023 

Vol. 1"S 


trick ' 8 •:■ "i Bun 

- i ■. 

' lis, 1»IJ 

mineral*, I91J U B Oeol sm \ 

Illinois, coke, I 

Illinois, mels.Uk 1911 U 9 Oeol Burv. 

Illinois minerals, 1919, V. B QsoL Burv 

Illlnol m 

in, li.i. aold mlnos 

Kolar goldfleld 

Ill.llrt. Mil. I 

n.i. .-iik.-. I -nrv 

pper, 1913 

Jul. ,ni. minerals Editorial 

Japan, mineral* 1913 l--'. 

Joplln district, minerals 100, 115. 

.s. mineral*. I y 1 3 

Ditto I'. B. Oeol Burv.... 

Mexico, minerals Editorial.... 

troleumi 1911 

ran. coal, U. 8 Oeol. Surv 

opp< i i B Oeol. Surv 88, 881, 

in. ■nils, 1913. I" S, Geol. Surv 

Michigan, silver, 1913, r S. Owl. Surv 

Minnesota. Iron 

Mlsourl, metals. 1918, S. Geol. Surv 

Missouri, minerals, 1913 

Ditto I". S. Oeol. Surv.... 

Butte, copper, 1918 

Montana, copper, U S. Oeol. Surv 

Montana, metals. V. S. Gaol. Surv ii'V/o 

Montana, nilnvrals 185, it'.'. 

.pper, u. s, Oeol Surv 

Nevada, Manhattan district, gold and sliver. 1913 

Nevada, minerals. 1913. U. S. Geol. Surv 

New Caledonia, ore. 1913 

New Mexico, coal, u. S, Qeol. Surv 

New Mexleo, copper. 1913 

I into U. S. Geol. Surv. . . . 

New Mexico, minerals. U. S. Geol. Surv 88. 

N.w Mexico, Socorro county, gold and silver 

New Mexico, zinc ore. 1913 

New South Wales. Broken Hill, minerals. 1913 620. 

New South Wales, gold by dredging. 1913 

New South Wales, minerals. 1913 

New Zealand, gold • • • • 

Nova Scotia, gold '02, 

Oklahoma, metals. 1913 U. S. Geol. Surv 

Oklahoma, minerals, 1913 

Ditto U. s - Geol. Surv 

Ontario, minerals. 1913 ■ • ■ • 

Oregon, minerals. U. S. Geol. Surv . ... . .103. 

Pensylvanla. anthracite coal Editorial.... 

Pennsylvania, coke. U. S. Geol. Surv 

Peru, minerals. 1913 

Philippine Islands, gold 

Philippine Islands, minerals, 1913 

Quebec, asbestos 

Queensland, minerals. 1913 • ■ • • 

Rand, gold J9S . 

Rumania, petroleum. 1913 

Russia. Caucasus district, manganese 

Russia, coal 

Russia, iron • • • ■ 

Russia, petroleum »«- 

Scotch mineral oil companies. 1913 

Sicilian Sulphur Combine sulphur 

si. ilv. sulphur 

South Africa, diamonds UiiV'iLi"" 

Ditto Editorial 

South Australia, minerals 112. 

South Dakota, minerals. U. S. Geol. Surv. 88, 

Sumatra. Dutch East Indies. Ombllien coal 

Tasmania, minerals. 1912 and 1913 

Tenn.-sae- copper. IT. S. Geol. Surv 

Texas, minerals. 1913. U. S. Geol. Surv 

Transvaal, gold .■■■■•, 

Union of South Africa, minerals 

Vnltert States, aluminum. U. S. Geol. Surv 

United States, arsenic. U. S. Geol. Surv 

I *ni t.-.l States, asbestos 

United States, barlte. 1913. U. S. Geol. Surv 

United States, bauxite 

United States, brlquetted fuel, 1913 

Eitto. 1 . sta 'f 5 : . eoal :.:::. :.::::.v.\j:s. alii. 1 surv: : : : 

United States coal, anthracite,* small sizes 

United Slates, coal, anthracite. U. S. Geol. Surv 

United States, coke. 1913. U. S. Geol. Surv 

United States, copper. U. S. Geol. Surv 

United States, feldspar i." "A" \° e ' " ' 

United States, gas. tar, and ammonia, U. S. Geol. burv. 

dIV to d sta .. s : [ . on - ■ : '. ". ' " '• '. ■ '• '• ' • '■ ' u- a g*°--' s»" : : : : 

United States. Iron, pig • ... ■■■ •■ • ■.• 3 |, 4 ' ,13 ' 872 

United States, iron pyrite. 1913. U. S. Geol. Surv 

United States, lead. U. S. Geol. Surv 

United States, mica, 1913 •■ ■ ;_■•■•••• • • • ■ ■ 

Ditto u - s - Geol. Surv.... 

United' States, mineral paint, 1913 "■;;■•,",' 

United States, minerals .8, Si, lob 

United States, minerals. 1913. U. S. Geol. Surv .... 

United States, petroleum ilv 

United States, petroleum. 1913. U. S. Geol. Surv 

United States, phosphate. 1913 .... 

United States, Portland cement, U. S. Geol. Surv... 239 

United States, pyrite 

United States, quicksilver 

Ditto U. S. Geol. Surv 

United States, radium. U. S. Geol. Surv 

United S-ates. rutile in 1913 ..................... 

United States, secondary metals. 1913. U. S. Geol. Surv. 

united States, slate. U. S. Geol. Surv 

J-. I 



7 7'.' 


91 I 





■JO 9 

7 7 9 





63 6 

7 9 3 






Unlli ilpl .• i B <•• "i s.n i 

United States, sulphurli acid, 1919, U B Oeol Burt 

United sint..-i. tin, metallii II 

United stm. ••■, tungsten, I' s. <: Burv,., 

Unlti i 81 ii ... .106. 47'. 

Ditto Bdltorlal ii" 

Utah, coal r B. Oeol. Burv 

Utah, coppar, U 8 (S<-<<l Stnv 261 

I'lnii. tnin. Tais by counties, 1918, r 8 Oeol Burv..., 

Utah, iniii. .nils. 1918, I' 8 <: Burv 

\\ ., I.s. .on I 7 73 

Washington, coal 

Washington, metals, 1919, U, B. Oeol Burv 176. 

w.-st Virginia. U. 8. Oeol. Burv 

Western Australia, gold i •-•:.. 3 is, 608, 666 

Wis. opsin, metals, 1918, U B. Oeol Surv 779 

wis isln. minerals, 1918, U, s. Qeol Burv 

World, copper 674 

World, gold. 191:1 Bdltorlal.... 

World, gold and silver, 1912 161 

World. lead c. !•:. Blebenthal.... 816 

w..ri,i. rubber 

World, zinc I I ■ I 

World, zinc and lead, 1918, I'. S. Geol. Surv 

Bdltorlal.... 881 

Wyoming, coal. 191:1 I*. S, Geol. Surv 911 

Wyoming minerals. 1918, I', s. Oeol. sun ill 

Professional ethics J. M. Lllllgren 187 

Progress at Chuqulcamata, Interview with Daniel Guggen- 
heim 57 1 

In tiie application of compressed air.. Robert Peele.... 75 

In gold and silver ore treatment in 1913 

Alfred James. ... 7n 

Ditto E. A. Julian 500 

Of flotation litigation Editorial 612 

Promotion. Ethics of mine I. Parke Channlng. . . . 182 

Properties of the Russian Mining Corporation 651 

Proske. T. H Blacksmith's problem.... 384 

Prospecting and Compensation Act. Clarence K. Colvln.... 938 

And government aid Royal P. Jarvls. . . . 936 

Ditto O. E. Klrkpatrlck. . . . 859 

Ditto P. L. Ransome.... 736 

Ditto F. Sommer Schmidt 581 

And leasing R. W. Brock.... 582 

Australia, government aid Editorial.... 89 

Present and future J. H. Farrell.... 1061 

What Is the matter with? Discussion.... (itll 

Ditto Editorial 3H7 

Ditto C. P. Greene 701 

Ditto G. L. Sheldon 780 

Ditto, Symposium, I, II, III, IV 9, 132. 168. 210 

Ditto Carl J. Trauerman. . . . 980 

Ditto Traveler 463 

Prospector in Mexico and 'The States'. . .John Watson.... 858 

Prospectors. Charcoal burning for....W. H. Washburn.... 613 

Claim measurement. Ontario 336 

Puebla. track cable transport 583 

Pulp agitation 423 

Elevating I 

Pumice. California production 

Pump, centrifugal, in elevating ore pulp 

Centrifugal, maximum efficiency 

Pumping at the Gold Hill mines on the Comstock 

Deep mine and air-lifts A. E. Chodzko.... 

Pumps, Horizontal duplex power, for high efficiency 

Puzzle in sulphide enrichment George Nlshihara. . . . 

Pyrite, California production 

Determination of sulphur in 

United States production 

Pyritlc ore deposits of Kyshtlm, Russia. A. W. Stickney. . . . 



Quartz Hill mine, Scott Bar, California 

Quebec, asbestos production 

Montreal, Mount Royal tunnel 

Queen of the Hills mine. Western Australia 505. 665, 

Broken crank-shaft 

Queensland. Australia, Charters Towers ore deposits 

Coal resources 625. 

Gold production 628, 636. 

Gold production. Charters Towers 

Labor and death rate 

Mineral production, 1913 

Mining troubles 


Silver production, 1913 

Quicksilver. California production 88. 

Ore occurrence, Cloverdale mine. California 

Leroy A. Palmer. . . . 

Peru production 

Prices 87, 124, 162. 201. 238. 276, 312. 353, 397. 434. 475, 
512. 550, 595, 635. 673, 713, 752, 792, 829. 871. 913. 951. 

995. 1034. 

Production and prices Clifford G. Dennis 

United States production 8. 

Quilp Gold Mining Co. v. Republic Mines Corporation. 

Mine. Imperator-Quilp Mining Co 

Quincv Mining Co.. Hancock. Michigan ... 88, 140, 157, 161. 
271. 356. 515, 677. 682. 835. 1039, 

Company report 


Radium see also carnotite. pitchblende, uranium, and vanadium. 

Editorial 879 

And cancer !064 

And its sources Charles T. Kennan. . . . 885 

SI 9 

10 69 



SI 2 








Vol. 108 


Anil Sirassburg hospital "37 

Hill Editorial 603 

Bill and Colorado Horace F. Lum._. .. ?80 

Bill id Congress 700, MS, 784 

British Columbia legislation 431 

nidi;- in United .States 398 

Colorado S6 « 

irado, Idaho Springs discovery Editorial.... 165 

as and withdrawal of Editorial 166 

Ontario Mil 629 


George D, Van Arsdale.... 1013 

San Salvador, Central Amei rvery 952 

United States production, 1913 502 

Utah occurrence 

Radium Company of America 749 

Radium Hill Co., Sydney, New South Wales 658 

im Institute, National Archibald Douglas.... 16 

oad Bill, Alaska Editorial 319 

Railroad Valley Co., .Wvada 265.591, 789 

Company report 314 

Gaylusslte 265 

Gaylussito beds, map 314 

Potash prospecting Editorial. . . . 797 

Railroads, Australia transcontinental Editorial. . . . 279 

United States, business 979 

Railways, Alaska ::?.: 

And forest lires 423 

And mines 964 

Rainbow Lode Development Co.. Butte, Montana, and Butte 

& London Copper Development Co., shaft unwatering 1027 

Shaft E. C. Reeder 968 

.. Alleghany, California 747 

horn mine. Idaho 1071 

Hand. Charles F. . American Institute of Mining Engineers, 

worn of 17 

Rand and native labor 151 

Banket H. Foster Bain. 229, 1022 

lilt.. David Draper 538 

Ditto r. W. Gregory. . . . 1020 

Ditto F. H. Hatch 299 

Ditto J. S. Hook. 621, 736 

Ditto J. F. Kemp 936 

Ditto Stephen J. Lett 420 

Ditto Waldemar Llndgren.... 818 

Ditto E. T. Mellor 781 

Ditto T. A. Rickard 621 

Ditto Kirby Thomas. . . . 226 

Decline of the F. L. Bosqui. ... 736 

Ditto H. S. Denny 49 

Explosives and sloping 341 

Gold decrease in ores with depth 229 

Gold production 151. 398, 543 

Goldfleld, life estimated 542 

Labor coats on the 20 

Middle East, map 21 

Mills on the 92 

Mines, consolidation discussed 942 

Mines, ore reserves 935 

Mines, production 753 

Mines, temperature Increases 464 

Ore transport In mines 808 

Strike 151 

What is the matter with? Editorial 560 

Working costs and condition of gold-mining industry.. 860 

Rand Mines. Ltd., amalgamation — cyanide plants 899 

Randall, John Increasing the efficiency of a grinding 

pan 417 

Randfonteln Central Gold Mining Co., Ltd., Rand 52, 942 

Costs 861 

Ransome. F. L Prospecting and government aid. . . . 736 

Rathfon Reduction Works, Washington 868 

And Republic mine 548 

Rattlesnake Jack mine. South Dakota, treatment 1025 

Ray, James C. .. .Reflecting microscope in mining geology 

and metallurgy 922 

Ray Consolidated Copper Co.. Ray. Arizona 58, 118, 

161. 307. 356, 477, 515, 677, 865, 1039 

Company report 399. 706, 794, 835 

Mining method 46 

Operating officials. 1913 793 

Sa fety First 269 

Rayfield (Nigeria) Tin Fields, Ltd.. Northern Nigeria 23 

Razing the Steptoe Valley stack D. Boyd-Smith. Jr. . . . 694 

Read, Thomas T.... Hydro and pyro-metallurgv of copper 

in 1913 54 

Ready Bullion mine. Prince of Wales island. Alaska 990 

Real del Monte mine. Pachuca, Hidalgo, Mexico, U. S. S. 

R. & M. Co 785 

Guerrero mill 114, 388 

Reata Mining & Milling Co.. Washington 272 

Recent advances In the study of sulphide enrichment 

C. F. Tolman, Jr 172 

Changes in iron and steel manufacture 

Bradley Stoughton .... 41 
Red Top-Laguna mine, Goldfleld Consolidated Mines Co.. 

Nevada 552 

Reduction of radium ores George D. Van Arsdale.... 1013 

Plant and compressed air „ 423 

' F. C Rainbow lode shaft 968 

Reeth. H. W Gold placers on the Kuskokwim river, 

Alaska 890 

Refineries and smelters, lead, in the United States 

C. E. Siehenthal. . . . 782 

Reflecting microscope Editorial. . . . 919 

Microscope In mining geology and metallurgv 

James C. Ray. . . . 922 

Reld, Walter L Smuggler-Union air-lift.... 452 

Reilly Fraction open-cut mine, Nevada, auto-trucks 826 

of rapid cyanldatlon Editorial.... 798 

Relative efficiency of sodium and potassium cvanlde 

Charles Butters. . . . 520 

Ditto C, M. Eve fifin 

Ditto G. W. Shepherd 898 


• dglng Co., and Tonopah Mining Co 23i! 

tee mine, Victoria, Australia 675 

Renong Dredging Co., Siam 28 

Costs 703 

Replacement oJpbodtes at the Gray Eagle mine 

Fred H. Dakin. Jr 970 

Reports, Importance of simplicity in Editorial.... 67H 

Republic Coal Co.. and Myers coal bill 9S8 

Republic mine, Chihuahua, Mexico 454 

Republic Mines Corp., Washington 236, 350, 510, 749 

And Rathfon Reduction Co 54S 

Bankrupt 122 

Bids for assets 548 

V. Qullp Gold Mining Co 19* M. L What is the matter with prospecting'.'. ... 13 

Residue, Disposal from Amador county mills, California.. 

M. W. von Bernewitz. . . . 770 

Nl pissing Mining Co., assay, 1913 782 

Renter Mining Co.. Wyoming 749 

Rent her, E. W . . . What is the matter with prospecting?. ... 374 
Reverberatory furnace. Copper matte production in the... 

Herbert Lang 802 

Review of the New York share market. . . .C. S. Burton .... 30 

Revision of mining law 627 

Ditto H. C. Callahan 422 

Ditto Frank P. Davis.... 982 

Ditto Editorial 90, 481, 603 

Ditto Grafton Mason 98 

Ditto, discovery William E. Colby. . . . 246 

Ditto. Discovery v. a permit system Editorial.... 244 

Rex Mining & Milling Co.. Cripple Creek, Colorado 156, 30S 

Rezende Mines, Ltd., Rhodesia 586 

Reymert mine. Superior. Arizona 70S 

Rhoads-Hall mine, Fairbanks, Alaska 269 

Rhode Island, electric light and power stations 221 

Rhodesia, area and government 761 

Crushing plants 146 

Health conditions B20 

Milling operations at the Eldorado Banket mine 

A. W. Allen 501 

Mines on London market 21 

Mining industry 585 

Southern, coal resources 821 

Wages at mines 859 

Rhodesia Chrome Mines, Ltd.. Rhodesia 586 

Rhodesia Gold Mining & Investment Co., Ltd., Rhodesia, 

company report 1077 

Rickard. Forbes Ore 385 

Rickard. T. A London market.... 20 

Ditto Miner as a pioneer of civilization.... 1004 

Ditto Ore 463 

Ditto Rand banket 621 

Ditto Water in veins 298 

Rico-Wellington Mining Co., Rico, Colorado 270 

Company report 715 

Rldder concessions, Siberia. Russo- Asiatic Corporation. 302, 651 

Right of Way Mines, Ltd.. Cobalt, Ontario 199, 629 

Rio Tinto Copper Co., Ltd., Spain, company report 715 

Robertson, William Fleet.. What is the matter with pros- 
pecting? 170 

Robey, Lloyd . .Suggested method of standard screen tests. 533 ' 

Robinson Deep Gold Mining Co., Ltd., Rand 52 

Rochester Hills Mining Co., Rochester, Nevada, company 

report 430 

Vertical sections through vein 430 

Rochester Mines Co., East Rochester, Nevada 1068 

Big 4 lessees 745 

Company report 472 

New officers 867 

Share litigation ended 867 

Suit decision 547 

Richester Weaver Mining Co., Nevada 106S 

Company report 591 

Leases, moisture in ores 540 

Rock, crushed, and granite, California production 588 

Rock-drill operation by gasoline engine, New 400 

Kepair costs : C. K. Hitchcock. Jr.... 933 

Rock-drilling in Lake Superior iron mines 

P. B. McDonald 494 

Rock-drills, Younger generation of 241 

Rogue River Public Service Corp., Oregon 748 

Rolker, Charles M Natomas Consolidated.... 227 

Roosevelt tunnel. Colorado 747, 789, 825, 867, 946 

Root's blowers, horse-power required 1024 

Rosenblatt, Girard B Coeur d'Alene electric plant.... 335 

Rosenfeld, Louis. .California miners and the Exposition. . . . 298 

Ross, G. McM Vocational training and miners.... 500 

Ross. Louis The meridiograph . . . . 640 

Round Mountain Mining Co., Nevada 197, 1072 

Cost of mining with underground crusher 43 

v. Round Mountain Sprlnx Co 1073 

Roush, G. A., chosen editor of 'Mineral Industry' 

Editorial 165 

Ditto Electro-metallurgy in 1913 61 

Rowe mine, Minnesota 1026 

Royal Consolidated mine, California 825, 990 

Royal School of Mines and University of London 665 

Rubber, artificial 1024 

South America, Amazon district exports 291 

World production. 1913 819 

Ruhl. Otto... Ore production of Joplin district for 1913 100 

Rulings of California Accident Commission 337 

Rumania, petroleum production, 1913 779 

Rush to the Hoco-Poco diamond fields 856 

Russia as a mining field 302 

Caucasus district, manganese production 1076 

Caucasus oilfields, rotary drilling 537 

Coal production and consumption 551 

Dredging 39 

Dredging In 1912 . .Translated by Wm. H. Shockley. . . . 894 

Empire, map 302 

Gold and silver production in 1912 164 

Iron production 551 

Kyshtim Corporation 179 

Vol, \"> 



Hiim on Londo 


t Kyshtim a u >ii. kni 
pbulMIng, ma ........ 

Ural dlatrl , , 

m.-. i S\ n.ll. .,t.- 

kunMuiii Hlnlng Corporation 


kalatlo Corporation '.s'oV, 

Kt.l.i.-i -k conceaalon 

Ruttls produotlon in IS1I , 

i. .i.*.. 1. 1 \ .i.i.i.i pr.v.ntlna in mining.... 

Mil r l. 'ii ii Museum Of IMIlorlul . . . . 

:,,ii-.i at Cornwall, Now Bdward Browning.... 

Rulea, Qenaral, Navada Conaolldated Copper Ci 

Sialtona, mm,-, in H.m«e Editorial. . . . 

Wlnchaa and oraba 

,,i. -nt preventing in mlnitiK 

Ann. .-II. la Copper alining Co 

Blaatlng and uaa "f explosives, Nevada Consolidated 

Copper Co 

I'll 1 1 torn la 

Conference, San Francisco Editorial.... 

i.i. practice 

Danger from fulls of nuk 

UataJ inin. accidents Editorial. .. . 

feline in-- prevention 

Nevada g$6 

Ditto K.lltorlal 

1 1 Conaolldated Coppei Co Editorial.... 

Safeguarding nealtn nf employee 

Ditto Editorial 

U, s. Bureau of felines Inventions 987, 

Use Ol powder underground U. Noblott.... 

St. Albans copper-gold claims, Oregon 868, 

St. Anthony Mining Co.. Nevada 

St. [ves Consolidated felines, Ltd., Cornwall, production... 

si. John del Key Mining Co.. Ltd.. Brazil, S. A 29, 

Company report 

St. Johns Consolidated Quicksilver Mining Co., Vallejo, 


St. Joseph-] Kun Lead Co., Missouri 

St. Jos.-i.ii head Co.. Bonne Terre. Missouri 

And Doe Run Lead Co.. litigation 

Annual meeting 

Company report 

v. Robert Holmes 

St. Louis Mining & Milium Co. v. Montana Mining Co., 

Ltd.. Drumlummon controversy 

St. Louis Smelting & Refining Co., Missouri 

St. Marv's Mineral Land Co., Michigan holdings 

Sakhalin Oil Fields, Ltd.. Siberia 

Sales, Reno H...What is the matter with prospecting?.... 

Salt. Peru production 

Philippine Islands production 

South Australia production, 1913 

Salted placers of Santo Domingo J. V7. Ledoux.... 

Sampler. Water-actuated E. Le Roy.... 

San Francisco Mint, gold recovery from residue 

Harold French. . . . 

Operations 176, 351. 470. 672. 793, 

San Francisco mine, Sonora, Mexico 

San F'oil Consolidated Co.. Republic. Washington 

Ami Hope and Knob Hill companies 

San Toy Mining Co., Chihuahua. Mexico, company report. 

San Ygnacio mine, Sonora, Mexico 

Sand and gravel. Philippine Islands production 

Filling of stopes, Angelo mine. Rand 

For filtration plants 

Shafts, High cost of 

Sinking through, in Lake Superior region 

P. B. McDonald. . . . 

Sand Queen mine. Western Australia 665, 

Sandstorm-Kendall Consolidated Mining Co., Goldfleld, Ne- 

Sanitation and disease. .loplln district 

Labor camp, California Editorial.... 

San Salvador, Central America, radium discovery 

Santa Gertrudis Co., Ltd.. Pachuca. Mexico... 92, 158, 204, 

Santa Rosa mine. Zacatecas, Mexico 465, 

Santaquln King mine, Utah 236, 

Santa Domingo goldfields, dredging Editorial.... 

Salted placers of J. W. Ledoux. . . . 

S;. w-tooth buildings 

Scheeilte, Queensland production. 1913 

Schmidt. F. Sommer. . .Prospecting and government aid.... 

Scholz, Carl American Mining Congress, work of.... 

School of Mines semi-centennial Editorial.... 

Schools. Vocational training and miners Editorial.... 

Schumacher mine. Ontario 

Scotch mineral oil companies production, 1913 

Screen tests. Suggested method of standard 

Lloyd Robey . . . . 
Screw classifier and fine-ore feeder.... S. A. Worcester.... 
Searls, Robert M Mining litigation, review and fore- 

Second Relief Mining Co.. Ltd.. Erie. British Columbia 

Secondary metals, U. S. production, 1913 

Secretary and the West Editorial.... 

Seger cones 

Seneca-Superior Silver Mines, Ltd., Cobalt. Ontario. 199, 236, 

Company report 

Seoul Mining Co.. Korea 199, 311. 510, 

Company report 122, 199. 

Operating officials 

Separator, Shields & Thielman 

Servia. gold and silver production, 1912 

Sesnon Co., John J Nome tramway, Alaska.... 


6 .11 

,. .i 



I Ml 

4 98 
n. • i'. 



7 '.IX 










4 73 






Settlors, vail. 


Seven Troughs Coalition Mlfi 

x uii.i , 

impany i upon 

Shaft-sinking, sleotrlc blasting wll ,,i...i. , . 

C. w. ktorai . 

siiafiK, niKht coal of sand 


Bhamva Mines, Ltd., Rhodesia Vl'sii' MO i< 

Shannon Coppt i if, Arlion*...161, 847. 


;i i 


. 356, GIG, 

Shannon Copper Co., and A,!*..,,;. . ,•".' ***' 8 * 6 ' * J2& 

C pan) i Zy' 

It 11 *? 1 ■■ ■' •■ What i.h ii,.- m.ii.i with praop ttnc 
Mi,. mi. Copper exploration Co.. Call fori mi 

Bhattuok Arlsona Copper Co., Blsbee, Arlsona... 161. SoV 

i ■::, ,i , 
Company report J~„ 

SI, "mh. S F iV,"-." ■ , Survey publication.*! .'.'. 9x0 

Ditto.... ....what is the matter win, fit." 

Sheep Rock Leasing, MlnitiK <* Mining Co., Utah ?il 

Sheldon, a L...„ ....Accidental discoveries of mlnea.... 164 

„ '•"•in What Ii the matter with prospecting" 780 

Shenanpo Furnace Co. Chlaholm, Minnesota..; 

Bhepard, W. M., and W. n. Gardner... Largest . lectrlcaliy 

npe.-ate.l K»lil died*.' lARS 

Shepherd, <;. W, .Relative efflclency of sodium and'potas- 

sium cyanide gag 

Sherldan-Adams Royalty Syndicate property/ Thorns 'sta- 

tion. Missouri 


Shields <£ Thielman, classifying Jig '.'.'.'.'. : -;s 

Ship building, principal countries of world in 1913" 

Canals. Tonnages through. 11112 ' ar'-t 

Shipper Copper Mining Co.. Nevada i-»c 

Shookley. William [{...Dredging in Russia In 1912, ' trans- 
lation gg| 

Ditto What Is tlie matter with prospecting?! ]'. 170 

Shovel. Bucyrus, water supply from locomotive tender.... 703 
ShUBhanna, see Alaska. Chlsana. 

Slam, gold production in 1912 ici 

Malayan Tin Dredging Co.. Ltd !!!!.'!!!! 28 

Mines on London market 28 

Kenong Dredging Co Vg' - os 

Siamese Tin Syndicate. Ltd " ->g 

Tin dredging cost Editorial!'. ! . 721 

Tongkah Harbour Tin Dredging Co 208 

'Slam", steamship eciuipped with Diesel engines.. . 228 

„ Dltto • Editorial 121* 

Siamese Tin Syndicate. Ltd., Slam 28 

Siberia and Alaska, Gravel mining in „ 135 

Atbasar copper mine ' ' ' ' 26 

Dredging [['] J|y 

Kyshtim Corporation, Ltd 26, 27, 30*2 1038 

Lena Goldfields. Ltd 26, 126, 185. 341, 432. 72l' 1076 

Orsk Goldfields. Ltd 26. 256 

Russo-Asiatlc Corporation, Ridder, Sokolni, and Ner- 
chinsk concessions 302 

Sakhalin Oil Fields, Ltd 352 

Spassky Copper Mines, Ltd 26 

Tanalyk Corporation. Ltd .W 302 

Western, map ( .351 

Sicilian Sulphur Combine !.!..!!!!!! 398 

Sicily, sulphur production !..!!!!! 927 

Slebenthal, C. E Lead smelters and refineries In tlie 

United States 732 

Ditto World's production of lead.... 816 

Sierra Nevada Consolidated Mining Co., Idaho 789 1030 

And Bunker Hill & Sullivan Mining & Concentrating 

Co g33 

Sierra Nevada Mining Co., Virginia City, Nevada 910, 1073 

Signal codes, mine 325 

Signals, mine bell 984 

Whistle, Nevada Consolidated Copper Co !! 536 

Silver added to gold in assay 819 

Alaska production 88 

And gold movements in 1913 224 

And gold ore treatment In 1913, Progress in 

Alfred James. ... 70 

Ditto E. A. Julian 500 

And gold, world movements Editorial.... 206 

And India 550 

Arizona production 106 

Australasia production, 1913 1069 

British Columbia production 202 

California production 88, 107, 588 

Canada production s 

Colorado, Aspen district, production 120 

Colorado, Chaffee county production 119 

Colorado, Clear Creek county production 119 

Colorado, Creede district, production 120 

Colorado. Eagle county production ] 1 9 

Colorado, Leadville district, production Tin 

Colorado production 4 2, 157 

Costs. Denney treatment. Nipissing Mines Co., Cobalt.. 74 
Estimation by fire assay... G. H. Clevenger and H. W. 

Young ci 1 

France imports sr»5 

Idaho production 107. 157 

Japan production 125. 1 035 

Lead ore, South Australia production. 1913 1059 

Lead ore, Tasmania production 714 

Market, eighty years of the 409 

Michigan production, 1913 747 

Montana production 135, 149 

Nevada production 1 1)8 

New Mexico production 88 

New York exports 1035 

Ontario ores !", 2 

Ontario production 592 

Oregon production 102. 591 

Peru production 872 



Vol. 108 


Philippine Islands production 911 

97, *34, 476, 
512 ■ . 718, 762, 792, B29, 871. 913. 961, 

995. 1034. l"7r. 

Queensland production. 1913 798 

South Dakota production 88, 910 

Standard, history 939 

Standards for 663 

<s production 

Transactions, Samuel Montagu & Co 996 

Union of South Africa production 626 

United Slates production 8 

Utah production 10 s. :* 1 7 

Washington production 176 

production, 1912 164 

Ditto Editorial 130 

W vnming production Ill 

Silver Hill Mining Co., Nevada 896 

Silver Hoard mine ( Ydumbla 15S 

Silver King Coalition Mines Co., Park City, Utah. 360, 790, lu7:; 

Silver Hill underground station 756 

v. Silver King Consolidated Mining Co 81 

Silver King Consolidated Mining Co.. Utah... 272, 310, 350. 1073 

Companv report 47o 

Litigation 1U73 

Silver yuei-n mine, Canada 231 

Silver Queen Mining Co., Kettle Palls, Washington 351 

Silver Top Mining Co., Wyoming 749 

Sllverton Mines, Ltd., Silver ton, British Columbia 5uii 

Sllverton Tramway Co., Western Australia All 

Simmer & Jack Proprietary Mines, Ltd., Hand 5^, L'29 

Company report 357 

Costs 626, 861 

Tube-mill &5U 

Simmer Deep, Ltd., Hand 229 

'•.sty 861 

Simmons, Jesse Mogul mill. South Dakota. . . . 1059 

Simplification Of gold-ore treatment A. W. Allen.... 898 

Sinking through sand in the Lake Superior region 

P. B. McDonald 1047 

Sintering copper ore 60 

Sixer, !•'. L Motor-truck haulage. . . . 573 

Sizing tests. Argonaut mine, California 265 

Slate. United States production 1037 

Slater leaching process for copper ores.-H. W. Morse 181 

Sleeping sickness 939 

Slime treatment at Broken Hill 657 

Sliming by grinding pans, Economical 

M. G. F. Sohnlein 84? 

Sluice-boxes, steel plates In 112 

Small head-frame 828 

Smelter fume and fruit trees Editorial.... 179 

Fumes and gases. Studies of 496 

Smelters and refineries, lead, in the United States 

C. E. Siebenthal 732 

Colorado Editorial. . . . i»20 

v. Farmers' Association, Utah Editorial.... 479 

Zinc and copper, sulphuric acid, 1913 860 

Smelting, Cerro de Pasco plant, Peru. .Spencer Bishop.... 177 

Colorado 383 

Copper 60 

Cost, Cananes Consolidated Copper Co 60 

Electric, in iron and steel manufacture 41 

Fluorite in Herbert Lang. . . . 492 

Katanga. Africa, copper 171 

Lead, at East Helena, Montana Bancroft Gore.... 416 

Lead, nickel, and tin, 1913, review Editorial.... 2 

Ores and metals 532 

West Virginia zinc 855 

Zinc, capacity of the United States 499 

Zinc in 1913 37 

Smith, E. A Cappelen. .. .Leaching and electrolytic pre- 
cipitation of copper at Chuqulcamata 739 

Smith, P. M., borax holdings Editorial.... 957 

Smith. Warren D Geological notes on Port Arthur 

and vicinity 461 

Smoke and plant efficiency 984 

Smoot bill, mining law codification 707. 74 5, 822 

Ditto Editorial 559 

Smuggler Mining & Leasing Co., Aspen. Colorado 945 

Air lift Walter L. Reid 452 

Snake Creek tunnel. Utah 431, 632, 827. 1073 

Snow at high altitudes 819 

Snowstorm Mining Co., Larson, Idaho... 198, 669, 747, 789, 1030 

And Missoula Copper Co 472 

Sloping methods 45 

Soapstone and talc. United States production in 1913 892 

Socledad Afinadora de Metales, Mexico City 388 

And Mexican silver coinage 707 

Socorro Mining & Milling Co., New Mexico.. 197, 548, 632, 827 

Pacific mine. New Mexico 946 

Sodium and potassium cyanides Editorial 519 

And potassium cyanide, relative efficiency of 

Charles Butters.... 520 

Ditto C. M. Eye 660 

Sohnlein, M. «.;. ("....Economical sliming by grinding pans 847 

Ditto Tin mining in Tasmania.... 148 

Sokolnt concessions, Siberia. Russo-Asifftic Corporation... 303 

Soluble losses Harai R. Layng 891 

Solution control in cyanidation A. W. Allen.... 338 

Ditto J. e. Clennell 500 

Ditto James S. Colbath 421 

Son), unwritten cyanide history H. Foster Bain.... 5S0 

Sons of Gwalla, Ltd., Western Australia .... 313. 505, 665, 863 

Company report 873 

Sopa I Hamond Mines, Ltd.. Brazil 806 

Sorenaen, S. Severin Stirling v. Babcock & Willcox 

boilers 340 

South Africa diamond and gold discovery history 1006 

I 'iiimond production 626 

Ditto Editorial 919 

Explosives 1024 

Mineral production 626 


Petroleum prospects 821 

South African Gold Trust. Ltd.. company report 

Soutl see also Argentina. Bolivia, Brazil, Chile, 

Colombia, i-wru. and Venezuela. 

Amazon dlstrlcT. rubber exports 291 

Brltl '1 red gin g 1M 

I >i edging In 1913 89 

i Guiana, gold dredging at Surinam 

J. B. Perclval. . . . 733 

Id and silver production In 1912 164 

Mill building In the Andes Alfred A. Watson.... 683 

Mines on London market 23, 29 

Northern portion, map 29 

South American Copper Syndicate, Venezuela .:• 

South Australia gold production 628, 1069 

Mineral production 112, 1059 

Silver production. 1913 1069 

South Blocks mine. New South Wales. Australia SB 

South Carolina, gold and silver production 8 

Phosphate rock 1035 

South Crofty, Ltd.. Cornwall production 77:: 

South Dakota, Black Hills minerals 827 

Deadwood Business Club, Heidelberg property 

467, 584, 941, 1025 

Forest law 373 

Gold production 88 

Lead miners' union building 910 

Silver production 88 

South Eureka Mining Co., Sutter Creek, California 

232, 392, 545 
South Kalgurll Consolidated, Ltd.. "Western Australia. . . . 

125, 505, 665, 688, 863 

South Kearsarge mine, Michigan :'T1 

South New Moon mine, Bendlgo, Victoria 537 

South Prince of Wales, Bendlgo, Victoria 537 

South Uno iron mine. Minnesota 125 

South L'tah Mines & Smelters, Newhouse. Utah 

161. 356, 515, 677, 835, 1039 
Southern Arizona Mining & Smelting Co., Virginia incor- 
porated 1066 

Southern Montana railway 786 

Southern Pacific Co. and Burke oil land suit.. 

Editorial 1041 

v. Development Company of America 985 

Southwestern Copper Co., San Simon, Arizona 824 

Southwestern Miami Development Co., Miami, Arizona.... 428 

Spain, dredging 40 

Fatality rate Editorial 243 

Iron production 378 

Lead production 816 

Silver production In 1912 164 

Rio Tinto, wage minimum 112 

Spassky Copper Mines, Ltd., Siberia 26 

Specialism and efficiency Specialist. ... 110 

Specific gravity, gold coin 341 

Gravity of specimen gold J. Jervls Garrard.... 817 

Speel River electro-chemical project W. P. Lass.. 21S 

Spelter, see zinc. 

Spilsbury, E. Gybbon....A correction, Hoover medal pre- 
sentation 624 

Ditto What is the matter with prospecting?. . . . 134 

Springfield Tunnel & Development Co., Sonora, California 

155, 825 

Spruce iron mine, Minnesota 125 

Stag Canon Fuel Co., Dawson, New Mexico 587 

Company report 618 

Disaster 1031 

Stamp dies, concreting 387 

Stamp-mills, Queensland 902 

Stamps, gibs used in tappets 902 

Rand 902 

Standard Consolidated Mining Co.. Bodle. California, com- 
pany report 507 

Lessees In 1913 693 

Slime value 779 

Standard Oil Co., China and Japanese newspapers 

Editorial 558 

In China Editorial 440, 797 

Standard Silver-Lead Mining Co.. Ltd.. New Denver. Britl- 

ish Columbia 117. 198. 473. 592, 632, 749, S69 

Company report 915 

Standardization Editorial 518 

Of terms Will H. Coghill 456 

Starlight copper and lead mine, Arizona 588 

Statistics, copper Editorial.... 402 

Steam power plant, Buckhorn Mines Co...E. H. Leslie.... 1010 

Steam-shovel at the copper mines Editorial.... 680 

In mining 47 

Mining, cost. Nevada Consolidated Copper Co.. Copper 

Flat deposit 4 8 

Mining cost, Utah Copper Co 48 

95-ton Panama, for sale 730 

Pits and water 1024 

Raising boom on a revolving 663 

l"tah Copper Co 387 

Work, Nevada Consolidated Copper Co 738 

Steamers, ore-carrying, Great Lakes 984 

Steel and blacksmiths. .W. S. Dooley and T. H. Proske.... 384 

And iron manufacture. Recent changes in 

Bradley Stoughton. . . . 41 

And iron production in France 101 

And Iron smelting, electric furnace 64 

Belts 939 

Electric furnaces for production 1 > 1 

Plates In sluice-boxes 112 

Shafting and horse-power 50_ 

Sharpening drill by machines 984 

United States armor-plate and 191 

Steptoe Valley Mining & Smelting Co.. McGill, Nevada, and 

compensation law 332 

Razing the stack D. Boyd-Smith, Jr 694 

Reverberatory furnaces 738 

Smelter determination of flue-dust losses 929 

Stevenson Iron Mining Co., Hibbing, Minnesota 125 

Vol. 108 


lean SiurliltiK & I 
TroUblM . 6£~ t , T47 

v Jonntiiuit Bourn*. Jr 
Stlcknej \ u : Kyehtlm, l;ii«»lit 896 

Stirling v. Babcoik V 

B s.\ 01 in 801 • 
Slum-. Philippine lion 

Sloping coet, Mount Lyell Mining a.- Rallwa) «'••. Tasmania 

Mining Co , Idaho 

Bt rat ton 1 Independence, Ltd , Cripple Creek, Colo*- 



Storm*, w. 11 Premature announcement . . . . 

Btoughton, 1 ■ 1 ut enanges In Iron and steel 


Btratton Cripple Creek Mining & Development,, lessi 

suits 1913 

Btratton*! Indent ndence, Ltd., Cripple Creek, Colorado. . . 

166. 808, 509, 


Strauss, Lester W. .Chilean nitrate Industry — 1. 11. HI.... 

972, 1011, 

Ditto Mining in Peru In 1913.... 

Streum line 

Strike. Colorado coal miners Tlo. 

Colorado coal uml Intervention Editorial .... 

Lake Superior district iy6. 

Ditto Editorial 






5 It; 



104 9 

Ditto, James bfacNaughton testimony 546 

Ditto, A1->v,r deported Editorial.... 90 

New Zealand Editorial .... 206 

Hand 161, 468 

Strikes, and arbitration. New South Wales. . .Editorial. .. . 89 

New Zealand altitude Editorial 317 

United States board of mediation Editorial.... 1002 

Stripping frozen gravel Editorial. ... 720 

Ditto Ex-Dawsonite. . . . 857 

Strong Gold Mining Co., Cripple Creek, Colorado 156 

Stubbs. J. E.. death of 912 

Students. Columbia University summer earnings 

Editorial 243 

Studies of Smelter fumes and gases 496 

Stuts, J. C What is the matter with prospecting?.... 661 

Suan Concession, Korea A. E. Drucker .... 764 

Ditto Editorial 758 

Success Mining Co.. Ltd.. Wallace, Idaho 157, 198, 1030 

Separating plant 825 

Suction-gas power In Western Australia, Evolution of... 

J. C. Auldjo 147 

Sudan Gold Field Co.. Ltd., Sudan, company report 715 

Sudbury nickel deposits. Application of the magnetometric 

survey to the Klrby Thomas.... 497 

Suez canal 494 

Canal as business index Editorial.... 1041 

Suggested method of standard screen tests 

Lloyd Robey 533 

Sulltjelma mine, Norway 179, 512. 656, 828 

Sulphide Corporation, Ltd., Western Australia 427 

Central mine. Broken Hill, New South Wales, company 

report 304 

Flotation 389 

v. Elmores-Minerals Separation process decision 543 

Sulphide-enrichment George Nishihara, . . . 386 

Puzzle In George Nishihara.... 660 

Recent advance In the study of C. F. Tolman, Jr 172 

Sulphur in pyrite, determination of 579 

Japan production 125, 1035 

Sicilian sulphur combine production 398 

Sicily production 926 

Smelter fumes 1067 

United States production 926 

Sulphuric acid manufacture, cost, Anaconda Copper Min- 
ing Co 55 

Tennessee Copper Co 239 

United States production 1913 '. 714 

Wallaroo & Moonta Mining Co., South Australia pro- 
duction, 1913 782 

Zinc and copper smelters, 1913 860 

Sumatra Island, Dutch East Indies, coal production of 

Ombllien 703 

Ketahoen mine 540 

Sunset Mining & Development Co., Rhyolite, Nevada, new 

treatment plant 748 

Tramp mine 748 

Superior & Boston Copper Co., Copperhill, Arizona. .. .232, 

307, 442, 788, 944 

Superior Copper Co., Calumet, Michigan 140, 157, 

161, 271, 356, 682, 747 

Company report 669 

Surf Inlet mine. Princess Royal island. British Colum- 
bia 993 

Surface condenser, correct form 301 

Surprise mine, Republic Mines Corporation, Washing- 
ton 236 

Survey. Natural Resources, of New Mexico 693 

Publications S. F. Shaw. . . . 980 

Susanna Mines. Ltd., Rhodesia 586 

Susquehanna iron mine, Minnesota 125 

Swansea Consolidated Gold & Copper Co., Arizona 269 

Sweden, cost water-power development 218 

Gold and silver production in 1912 164 

Hydro- electric power Editorial. ... 165 

Iron smelting, electric furnace 63 

Lead production ■ 816 

Trollhattan. zinc smelting, electric furnace 63 

Switzerland, iron smelting electric furnace 63 

Machinery manufacture. 1913 950 

Sycee 265 

Tacoma ran 


Tallinn treatment al Butte Reduction Works. ... 

lair uml IOC 

Tallsn, Ltd . New Zealand 

Tamarack \- Custer Consolidated Mini 

I' 1 "'" I ' 149, 1080 

Tumaru.k Mining Co., Calumet, Michigan 140, 

366. 515, 677. SE 1039 

Company report 669 

Leaching plant ' " 7g^ 

Tanaiyk < Corporation, Ltd., Siberia .. .10, 302 

a Ulnea Excavation A Manufacturing *'••, Alaska.... 307 

Tandem electric Locomotive 600 

Tanganyika Concessions, Katanga. Central Airlca 

Tank excavation, large, New Boutn w.-ii.- ' L019 

Tanks, acid, mastic lining Cor 620 

Assembling and erecting wooden J. Bl Ltlllgren .... 411 

Links In steel and wood n : 

Taquah mine. West Africa, history LOOfl 

TS r, United States production 

Tarr Mining Co.. California, retired , '. 95 

Tasmania, Anchor Tin Mining Co us 

Qold mine, Reaconsdeld B 

Qold mine, Beaconsfleld, closing down 704 

Gold mine, Beaconsfleld, water pumped 819 

Gold production 628, 1069 

Hercules mine ' 303 

Mineral production 705. 7 ] 1 

Mining legislation ' 1069 

Osmiridlum nuggets 860 

Silver production, 1913 .' 1069 

Tin mining in M. G. F. Sohniein 148 

Zinc-lead sulphide ores on west coast 943 

Tasmania Smelting Co., Ltd 943 

Tasmanian Copper Co., Rosbery property 943 

Tata Hydro-electric Power Supply Co., Ltd., India 897 

Taylor, bill, codification of mining laws 822 

Taylor Foundry & Engineering Co., battery frame 419 

Tchernycheff, Theodosie, death of 200 

Technical terms. Standardization of.... Will H. Coghlll.... 456 

Technology of turquois Joseph E. Pogue 285 

Teck-Hughes mine, Ontario 389, 510 

Tecopa Consolidated Mining Co., Tecopa, California, com- 
pany report 4 2!* 

Telegraph, wireless stations 819 

Telephones, mine-rescue 128 

Temiskaming & Hudson Bay Mining Co., Cobalt. 

Ontario 199 

Temiskaming Mining Co.. Ltd., Cobalt, Ontario 199, 426. 629 

And management 424 

Temperature increase Rand mines 464 

Temple-Ingersoll gasoline air rock-drill 400 

Tennessee, copper production 261 

Ducktown copper deposits 711 

Gold and silver production 8 

Phosphate 890, 1035 

Tennessee Coal, Iron & Railway Co., Alabama mines 785 

Turbo air-compressor , 502 

Tennessee Copper Co., Copperhill, Tennessee 161, 239, 

344, 356, 515, 677, 835, 1039 

Company report 424, 670 

Costs 819 

Smelting and coke consumption 819 

Terms. Standardization of Will H. Coghlll 456 

Terrestrial atmosphere 301 

Terrible-Dunderberg properties, Colorado 945 

Tewksbury Amalgamated Gold Dredging Co.. Victoria, 

Australia, company report 675 

Texas, Buck zinc prospect near Boracho. . . .J. A. Udden 493 

Freeport sulphur mines 591 

Gold production 8, 110 

Iron ores of eastern 905 

Lead production 110 

Mining law Editorial. . . . 206 

Petroleum production 163 

Quicksilver production 81 

Silver production 8, 110 

Texas Iron Association 905 

Teziutlan Copper Co., Mexico 114, 510 

Thacher, Arthur What is the matter with 

prospecting? 13 

Thawing frozen ground, Alaska, drift mining in gravel 

deposits of Cape Nome Arthur Gibson 404 

Frozen ground for placer mining. .. .Arthur Gibson.... 143 

Thayer, Benjamin B What is the matter with 

prospecting? 13 

Theller, J. H Hydraulicking on the Klamath river.... 523 

Theory and practice of crushing H. W. Hardinge. . . . 226 

Third Beach Line at Nome, Alaska Arthur Gibson. . . . 686 

Thomas. Klrby Application of the magneto-metric 

survey to the Sudbury nickel deposits 497 

Ditto Rand banket 226 

Thompson, Towle & Co., copper statistics 1075 

Three-phase motors. Application to winding engines and 

hoists C. Antony Ablett and H. M. Lvons. . . . 689 

Tightner Mines Co.. Alleghany, California 119, 155, 1029 

Mine, battery frame Editorial .... 479 

Tigre Mining Co., Mexico 790 

Timber sale, Idaho. Clearwater national forest 991 

Waste. Australia 628 

Timber Butte Milling Co., Montana, zinc concentrating 

plant 992 

Timbering. Broken Hill mines, Australia 228 

Tin and gold dredging in 1913 Charles Janin. ... 39 

Belgian Congo 324 

Bolivian fields. Transportation and government regula- 
tions in G. W. Wepfer. . . . 294 

Cornwall, ore treatment 2C5 

Cornwall production 773 



Vol. 108 



From iCrap tin-plate. Germany 

iction 914 

Metallic, United Si ales production in 1913 588 

Itinera] coluslte, Butte, Montana 1034 

Mi. La G. W. Wepfer. ... 251 

Ditto, <:. W. Wepfer Editorial.... s;^ 

Mining:, Northern Nigeria -3 

..smanla M. G. F. Sohnlein. ... 

Hi market prices s«. 87. 124. 353, 3i»7, 433 

175, 593, 

w.-dglng. Alaska 828 

...87, 201, 238, 276, 277. 812, 434, 512, 850, 635, 

.:. 752, 792, 829, B71, 918, 950. 951, 995, 1034, 1075 

tid production. 1913 793 

Smelting, electric furnace t> -*■ 

Tasmania production 714 

Ld Dredging Co., Gunnison, Colorado 86 

titanium, melting point 11- 

Todd. W. S. G What is the matter with 

prospecting? 375 

18 Milling CO., Ltd.. Colombia, company report 675 

Toimaii. Jr., C. !•' Recent advances in the study of 

tilde enrichment 172 

Tom Reed Gold Mlnea Co., Oatman, Arizona 194. 668. 824 

i Company report 990 

Tonihoy Gold Mines, Ltd., Tellurlde. Colorado 24, 454, 

471, 669, 908, 1030 

Tombstone Consolidated Mining Co.. Arizona 907 

Ton weight, equivalents in different materials, cubic 

feet 287 

Tongkah Harbour Tin Dredging Co.. Slam, company re- 
port 208 

Tonnages through ship canals. 1912 653 

Tonopab, Nevada, stocks on Boston stock exchange 343 

Tonopah Belmont Development Co., Nevada 108, 157. 

197, 849, 181, 548, 591, 632, 711. B68, 961, 1081, 1072 

Company report 706, 833 

Mni< traction 583 

Power fur vacuum pumps 939 

Shaft hoist 819 

Stamp-mill 902 

Surf Inlet mine, British Columbia ■. 993 

Tonapah Extension Mining Co., Nevada.. 197. 309. 349. 466. 

548. 711, 826. 868. 951, 922 

Company report 997 

Tube-mill 850 

Tonopah Merger Mines Co.. Nevada 197, 826 

.pah Midway Mining Co.. Tonopah, Nevada 197 

i lompany report 357 

Tonopah Mining Co.. Nevada 108. 196. 197, 272 

309. 349. 352. 518. 591, 711. 772. S6S. 992 

And Brown patents decision 5 

And Brown patents, Some unwritten cyanide history 

H. Foster Bain 

And Reliance Gold Dredging Co 

Company report 91 

Moore Filter Co. suit Editorial 878 

V. Joseph A. Vincent decision Editorial.... 480 

Tonopah Placers Co., Tonopah Mining Co 272 

Topographic maps, new. United States Geological Sur- 
vey 582 

Tough-Oakes. Ltd.. Kirkland Lake, Ontario 122. 199. 

389. 541, 671, "05, 869. 993 

And Kirkland Lake Proprietary 541 

Tovote. William L. Globe mining district, 

Arizona 442. 487 

Tractor. Ball tread 956 

Trade. Fostering foreign Editorial. . . . 280 

Train service, ore and dump. Nevada Consolidated Copper 

Co 698 

Training and miners. Vocational G. McM. Ross.... 500 

Tramway, a. rial. t.> Chinese coal mines. . .C. A. Tupper. . . . 379 

Nome, Alaska 71 S 

Leschen aerial, Alaska 265 

Transitions In copper metallurgy Editorial 1042 

Transmission lines 387 

Transport of ore in Rand mines 808 

Transportation and government regulations in Bolivian 

tin fields G. W". Wepfer 294 

South Africa, see also Rand. 

Fatality rate Editorial. ... 243 

Gold Industry 964 

Gold production 151, 469, 942 

Gold returns 346 


23 3 

Mines, on London market 

Northern MeBslna copper mine Owen Letcher.... 

Strike 346, 

L913 844 

Tran. Carl J Inducing capital into mining 


i tailing at Butte Reduction Works 

Bancroft Gore. . . . 

Cost of erecting M. W. von Bernewltz. . . . 

| B Grinding short zinc shaving. . . . 

Trethew.v Cobalt Silver Mines Co.. Cobalt, Ontario. ... 199. 


Trlmountaln Mining Co.. Michigan 140, 

Trlnlt; dated Hydraulic Mining Co.. California, 

b n > report ^- 

Trinity Gold -Mining & Reduction T"o., California, com- 

Federated Malay States 

rt 915 

Troy, Arizona 269 

Truck. Underg nd timber P. B. McDonald. ... 892 


Theory and prai rushing. . . .H. w. Hardinge. . . . 226 

Tube-mills, rate of revolution 663 

Tulsa 8 Oklahoma 868 

Tungsten, California production 788 

Making ductile 979 

i 872 

United States production 520 

: driving In India 1019 








Portland canal Lloyd C. White.... 731 

Work, Danger from falls Of rock 698 

Tuolumne Copper Mining Co., Butte, Montana 394, 710 

Company report 590 

Yearly paymnll 116 

Tupper, C. A A.-rlul tramway to Chinese coal mines. ... 379 

Turkey In Asia, gold and silver production In 1912 164 

Lead production 816 

Ores 332 

Turner, Henry W What is the matter with 

prospecting? 170 

Turquols, Technology of Joseph E. Pogue.... 285 

Twin, Peaks Mining & Milling Co.. York, Arizona 118 


Udden. J.- A Buck zinc prospect near Boracho, 


L'mnlati mine, Rhodesia 

Underestimating the cost of milling plants 

I. F. Laucks. . . . 

Underground timber truck P. B. McDonald.... 

Ungava Miners & Traders. Ltd.. Montreal, Quebec 

Union Consolidated Mining Co., Virginia City, Nevada 

Union Balnea, Kossland, B. c 

Union M.niere du Haut, Katanga, Belgian Congo, Africa... 

Compan y report 

Ditto Editorial 

Union of South Africa and Premier diamond mine 


Mineral production 

Wages. 1 » 1 3 

United Copper Mining Co., Chewelah, Washington 198, 

272. 395. 592. 671. 827. 
United Globe Mines Co.. Giobe, Arizona 

Company report 

United Gold Mines Co., Cripple Creek, Colorado 

Company report 


United Hustlers & Redan, Bendigo, Victoria 

United Iron Works. Oakland, California, improved, Hunt- 
ington centrifugal roller quartz mill 

United Kingdom, bank clearings 

Shipbuilding. 1913 

United Mine Workers of America 


United Mines Co.. Washington, organized 

United States and Mexico Editorial.... 

And Mexico, seizure of Vera Cruz Editorial.... 

Atlantic coast region, depression 

Bureau of Mines, see Bureau of Mines. 

Coal mine fatalities 

Coal production 

Gold and silver production in 1912 

Gold dredging in the Charles Janin.... 

Lead production 

Mineral production 

Mineral production, world position 

Mines on London market 

Money in circulation 

Petroleum production. 1913 t . 

Population estimated '. 

Public lands acreage 

Shipbuilding. 1913 

Technical societies growth 

United States Geological Survey, new topographic maps. . . . 

Production statistics, see Production statistics. 

Publication S. F. Shaw 

United States Phosphate Co., Border, Wyoming 

United States Smelting. Refining & Mining Co 161, 356, 

515. 677. 835. 

Bond issue 

Company report 636. 666, 

Real del Monte Co.. Pacliuca. Mexico 

Real del Monte and Aguascallentes plants 

L"nil<-il St, -el Corporation, company report 667, 

i '.impensation for injuries 

Panama-Pacific Exposition exhibit 

Report and finances Editorial..,. 

Unfilled orders 

United Verde Copper Co., Jerome, Arizona 161, 804, 

356, 515, 630, 677. S35. 

And Copper Giant mine. Arizona 

United Verde Extension Mining Co., Jerome, Arizona 

I lilted Verde Public Utilities Co 

United Zinc Co. v. Sydney Harwood and others 

University of London and Imperial College of Science and 


Upper Verde Far & Orchard Co., Arizona 

Uranium and vanadium . 

Great Britain production 

In United States 

Ore. Utah 

Ores, free from pitchblende 

Prices In Utah 

Use of powder underground R. Noblett.... 

Utah, accident fatalities, coal mines, 1913 

: iver county mines 

Bingham mines 

Carnotlte in 104. 

Coal production 

Copper production 108, 

Gold production 8, 

Lead production 

Mineral production bv counties. 1913 

Park City district 108, 345, 350. 592, 

Phosphate area map 

Phosphate rock 

Radium In 

Silver production B, 

Smelter V. Farmers Association Editorial.... 


























7 s ", 






Vol. 108 


■ k lunn. t 
Ttntl. dlatl Icl 

mineral «iu lalon 
hool «-r Min. - metall 

>!• ; 88<t 

'.' 1 < > 
7 |*i 

SSInc production 108 

LTtan in, g0S 

Utah Conaolldalt gham, ruth 161, 366, 

i tampan) report 

i 'i output lit; 

Utah Coppei Co.. Bina-ham, Utah... .108, 161 B04, 

• 1039 

Com] 744, 79Q 

I'ir. I 785 

Mng plant 784, 790, *:'.'!. 940 

Ditto Editorial 960 

Mining method 48 

' Operating official*, iyi3 793 

m ihorela 

Ditto Editorial 680 

t'tah Mi-tul A: Tumi.) Co 1066 

•Utah Metal Mining Co., Tooele, Otah 198 

Reorganisation 906, 1066 

- i o, Sonora 869 

Valdea Creek Placer Mines: Co., Smith-Munahan proper- 
ties 154 

Valuing dredging ground L. A. Decoto.... 773 

Ditto H. N. Herrlck 1061 

Vanadium and uranium 103 

orado 104 

Melting point 112 

Peru production 872 

Vanadnlte claims. Arizona 630 

Van Airedale, George l> Reduction of radium ores.... 1013 

van Barneveld, Charles E California miners and 

the Exposition 213 

Van-Rol Mining Co., Ltd., Sliver ton, B. C 310, 993 

Van Ryn Gold Mines Estate, Lid., Rand, company re- 
port 598 

Veins, Water In T. A. Rickard. . . . 298 

Veneiuela, South America, mining in 592 

OlWeld 187 

South American i'opp.-r Syndicate 29 

Ventilating system, mine cost 1024 

Vera Cruz. Mexico, seizure by Americans. .. .Editorial. .. . 680 

Verde Tunnel & Smelter Co.. Arizona 304 

Railroad 630 

Vermont, electric light and power-stations 221 

Victor mine, Tonopah 826 

Victor Power & Mining Co.. California, Midas mine 991 

Victoria, Australia, Bright district dredging cost 

Editorial 721 

Dredging damage report ■ 628 

Dredging industry 450 

Gold discovery hlstorv 1005 

Gold. Bendigo production, 1913 537 

Gold production 628, 636, 1069 

Government coal mine. "Wonthagg! 565 

Stawell district and Great Boulder Proprietary 704 

Victoria Copper Mining Co.. Victoria, Michigan 140, 271 

Company report 430 

Victorious mine. Ora Banda. Western Australia, Associated 

Northern Blocks (W. A.) Ltd 92, 125, 552. 664, 665 

Village Deep. Ltd.. Rand 808 

Village Main Reef Gold Mining Co.. Rand 52 

Vincent, Joseph A., v. Tonopah Mining Co. decision 

Editorial. . . . 4S0 
Vindicator Consolidated Gold Mining Co.. Cripple Creek, 

Colorado 156. 271, 308, 789, 991 

Company report 314 

Virginia mine. Bendigo. Victoria 537 

Gold and silver production 8 

Virginia Consolidated mine. Idaho 747 

Vocational training and miners Editorial.... 403 

Ditto G. McM. Ross 500 

Vogelstein & Co., L. copper statistics 238, 434, 673 

Tin statistics 162, 312. 512. 635, 829. 995 

von Bernewltz, M. W Cost of erecting treatment 

plants 619 

Ditto Disposal of residue from Amador county 

mills, California 770 

Ditto Dredging at Oroville 297 

Ditto Hoisting at the Argonaut mine. . . . 697 

Ditto Metallurgy of the California Mother Lode. ... 65 

Vulcan Det inning Co., New Jersey and Illinois 792 


Wage, minimum. Rio Tinto, Spain 112 

Wages, Australia Editorial. . . . 641 

Rhodesia S59 

Union of South Africa. 1913 844 

Wagner Azurite Copper Co.. Luning, Nevada 427, 868 

Leaching plant 632 

Waihi Gold Mining Co.. New Zealand 92, 914 

Waihi-Paeroa Gold Extraction Co.. New Zealand 92 

Company report 832 

Wales, coal production 773 

Walker. Edward Flotation processes during 1913 ... . 79 

Wall, Enos A. and Marv F.. v. Bingham & Garfield railway, 

Utah 310 

Wall. Col. Enos A., v. Consolidated Copper Mines Co 868 

Ditto Editorial.... 837 

Wall Street .iii,I I million. 

Hull. i ,v m in MiniiiK *■ Smelting Co., Ltd., South 


.-i pi oduclng coppt ill. 

Walsh leasing hill in Congress .. 
Walsh. 'I'll. iii, .is .1. Mining li ii Washlngl 

\\ unukuh Mining Co., O Colorado 

Wandlllgong Gold Dredging Co., Victoria, tuatral 

pany report .. . 

Wankle Colliery Co., Ltd., Rhodeala 

w.uiii, K. I'' Development. In the Shushai 

fields 179 

War Baffle mine, Nevada u i 

Warren Peak MJnea Co., Wyoming n>j 

strict property, South Dakota 

Warrior Copper Co., Glob Arizona 'ii i 

Wasai. i i tii, Mining Co., Utah 

Washburn, W, H. .. .Charcoal burning foi pro 
Washing and mining brown he] 

w. it. Ige 168 

I at the Mineral Slide mine, California ::i:, 

Washington, Blewett, nai hangi proposed Til 

i 'hewelnh district 

Coal production :■ i i 

Copper production 176 

Gold production y 171; 

Lead production i;»; 

Liberty, discovery at Blgney claim 17:: 

M.tal production In 191.1 176 

Mt. Rainier t;,t; 

Republic mines 236, 510, 749 

Seattle, United States assay office gold receipts L9f 

Silver production s. 176 

Spokane Stock Exchange 310, 632, *27 

Strike, Huston smelter, American Smelting & Refining 

Washington Water Power Co.. company report 

Wasp No. 2 Mining Co., Lead, South Dakota 305, 

Company report 

Costs and recovery at mine and mill 

Water appropriation law. California 

Consumption at Kalgoorlle mines 

Cost, Mother Lode region, California 

In veins T. A. Rickard .... 

Kalgoorlle mines consumption 

Water-actuated sampler E. Le Roy.... 

Water-power bill. Ferris % 

Bill in House 

Development, cost, Norway, Sweden, and L T nlted 

Plant construction cost, Norway 

Resources. India 

Watson, Alfred A Mill building in the Andes .... 

Watson, John. .. .Prospector in Mexico and 'the States'.... 

Wedge mine. Colorado 

Weldlein copper leaching process 

Ditto Editorial .... 

Weisbrodt. Henry, non-skimming crucible 

Welding and cutting, oxy-acetylene 

Wellington Mining Co.. Colorado 

Wepfer, G. W Tin mining in Bolivia.... 

Ditto Editorial 

Ditto Transportation and government regulations 

in Bolivian tin fields 

West. The Secretary and the Editorial.... 

West Africa, dredging In 1913 

Gold discovery history . 

Gold output annual 


Mines on London market 

Nigeria, tin mining in Northern 

Silver coins 

West End Consolidated Mining Co.. Tonopah. Nevada 

108, 197, 272, 349, 548, 591, 711, 951, 

v. Jim Butler litigation 632, 

Ditto Editorial 

West Virginia, coke production 

Petroleum production 163. 

Zinc smelting 

Western Australia, Evolution of suction-gas power in.... 

J. C. Auldjo. . . . 

Gold discovery history 

Gold production 125. 313, 5u5, 628, 636. 665, 

Kalgoorlle goldfield, Geology of the 

C. O. G. Larcombe.... 

Kalgoorlle mines, water consumption 

Norseman wages agreement 

Silver production 1913 

Titles to mining claims Editorial. . . . 

Wage demands 

Western Electric Co.. mine-rescue telephones 

Western Gold Mines Co., California, organized 

Western Precipitation Co.. Slater process 

Westervelt. W. T What is the matter with 


Westinghouse, George, death of 

Westinghouse Electric & Manufacturing Co., report 


Weston safety winches and crabs ., 

Wet crushing in ball- ml lis A. W. Allen. .. .' 

Wettlaufer Lorrain Sliver Mines, Ltd., Silver Center. 

Ontario 199, 231, 

Wettlaufer Mines Co., Ontario 

Whaleback claim. Washington 

What is the matter with prospecting?, discussion 

Ditto ; ; Editorial 

rvtto J. H. Farrell 

Ditto C. P. Gre-he. . . . 

Ditto A reioip't »r . . . . 

Ditto G. L. Sheldin 

Ditto Symposium I, II. Ill, IV 9. 132. 168, 






















Vol. 108 

Ditto Carl J. Trauerman .... 980 

Traveler. . . 

matter with the Rand? Editorial. . . 560 

Wheal Kli n halls United, Ltd.. Cornwall, pro- 

7 . :'■ 

Whim Well Copper Mines, Ltd., Western Australia, com- 
pany report 873 

Whip, i" hoisting Editorial. . . . 641 

>nsolldated Copper Co 536 

l • .. » lasollne mine locomotive 360 

White, Lloyd C Portland canal tunnel. ... 731 

;. Huat river floods, China 440 


Whil tilling & Development Co., Montana, 

organi/nl 1071 

Why Not mbla 890 

Wllberi Mines Co., Arco, Idaho, company report 801 

Wild Ho Creek, Colorado 156, 808, 171, 991 

William Ugo, Victoria 537 

Wilson, Prank L Leaching of zinc ore at the After- 


Wlnchell, Horace V What is the matter with 

■-■ ' 171 

Wlnchell, Newton H., Death of 828 

. safety 360 

Win) electrical driving, choice of drum 

C Antony Ablett and H. M. Lyons.... 778 
Engines and hoists. Application of three-phase motors 

C. Antony Ablett and H. M. Lyons. . . . 689 

Engines, Electrical driving of 

C. Antony Ablett and H. M. Lvons.... 774 

Windmill Hill mine. Bendtgo, Victoria 537 

Windmill. Holland In draining 702 

Milling & Ore Purchasing Co.. Nevada ■ 

Winona Copper Co., Winona, Michigan 140, 271, 682, 1030 

Company report 590 

Winter dredging in Idaho John H. Miles. .. . 455 

Winzes or pass< B, coi -ring when not in use 

Wlrelee ph stations, 1913 Blfl 

Wisconsin, metal production, 1913 779 

Mil; 1 1,. i), 191J 831 

ctlon by districts 504, 864 

market 50 

CJnlvei -ring Experiment Station 

Editorial 480 

Zlnc-1 ii 150, 343. 664 

Zinc ores in 1913 37 

n n Co., 1 1 ate v I lie. Wisconsin 1069 

WltwaterSl Ltd., Transvaal, sand-filling stopes, 

cost 939 

mm, Great Britain production 914 

Quei ductlon, 1913 791 

Tasra ductlon 714 

Wolfi - ft smelting Co.. Ltd.. Portugal, company 

report 7 1 »J 

Wolverine Copper Mining Co., Kearsarge, Michigan. ...140, 

181, 871, 344, 356, 515, 677, 747, 835, 1039 

Woodland Mining Co.. California 507 

WoolWOrth building, New York, and Woolworth 10-cent 

stores in United States 340 

Work at the Ululps. Dodge & Co. properties in 1913 616 

Of the national societies 17 

Of th<- state geological surveys. . .Frank W. De Wolf. . . . 35 

Worklngmen's compensation, California Editorial. . . . 130 

Compensation Act, California, and wage reductions.... 128 

Ci'imj [.la ho Editorial. . . . 920 

Compensation, judicial rulings Editorial. . . . 402 

Compensation, Nevada Editorial. ... 131 

New York Editorial. ... 1 :i 1 

Compensation Act, Ontario 743 

World's Fair mine, Patagonia, Arizona 307 

Worcester, S. A Screw classifier and fine ore feeder.... 530 

Wrlghl \ What is the matter with 

ting? 212 

City, gold mining district 993 

1 mining district 749 

1 ' iroductlon 914 

1 oductlon Ill 

1 odd production S, 111 

in 163 

1 map 351 

rock 1035 

Silver production s ] 1 1 

Snowy Range district discovery 351 

Sundance gold discovery reported Editorial.... 679 

Yankee Boy Mining Co.. Walla- e, Idaho 1030 

Yankee Lated Mining Co., Eureka. Utah 671 

Yard decision tV or ruled 80 

fellow fever prevention, cost 819 

fellow Jacket Gold & Silver Mining Co., Gold Hill. 

Nevada 910 

Company report 

Pumping 662 

fellow Pine Mining Co.. Good Springs, Nevada 1078 

fosemlte Dredging & Mining Co., Snelling, California.... 907 
Young. H. W. and G. H. Olevenger. Estimation of gold, 

silver, and platinum by fire assay 614 

Yuanml Gold Mines, Ltd., Western Australia 313, 

505, 665, 863 

Company report 126 

7ubs Consolidated Goldflelds, California 40, 93 

fuba No. 14. W. 11. Gardner and w. M. Shepard 1053 

ibe Construction Co., California, ball tread tractors 956 

instruction Co., Philippine Islands 40, 184 

Eukon, dredging 39. 183 

Go id field history 1008 

Yukon Cold Co., Dawson. Yukon 39. 183, 191, 199, 

466, 711, 1032 

Company report 553 

Dredging at lditarod 735 

Dredging cost Editorial. ... 72" 

Y-Water Tin Co.. New South Wales, company report 873 

Mining Co., Jackson, Cal 69 

Zeranovsk concession. Russian Mining Corporation 651 

Ziegler. Victor, mineral resources of Harney Peak peg- 
matites. I. II 604. 654 

Zinc and lead in 1913 Editorial 681 

Arizona production 107 

Bisulphite process, Metals Extraction Corporation, 250 

British Columbia production 202 

tUn-k prospect near Boracho, Texas J. A. Udden 493 

California production 107 

Colorado production 42. 157 

I 'olorado. Clear Creek district, production 119 

< iiorado, Creede district, production 120 

Colorado, Eagle county production 119 

Colorado. Leadville district production 119 

Discovery in America Charles R. Keyes.... 653 

Great Britain production 914 

Idaho production 107, 157 

In precipitation boxes 703 

Japan production 125 

Market 85, 87, 275, 433 

Montana production 135, 149 

Nevada production 108 

New Mexico production 88, 121 

Ore at the Afterthought mine. Leaching of 

Frank L, Wilson 453 

Orfl in electric furnace Editorial.... 480 

Ores and metallurgv in 1913 R. G. Hall.... 37 

Priees 87, 124. 162. 201, 23S. 276, 312, 353, 397, 434, ITT.. 

512, 513, 550, 594, 596, 686, 678, 718, 762, 792, 829, 863. 

871, 913, 950, 951. 995, 1034. 107". 

Production and prices in 1913 513 

Production, world 674 

Shaving. Grinding short J. B. Tregloan. . . . 887 

Smelters in United States 499 

Smelting capacity of the United States 4 , ;>:-t 

Smelting, electric furnace 62 

Smelting in West Virginia 855 

United States production 8. 106, 47fi 

United States production Editorial. ... 440 

Utah production 108. 94 i 

Wafers, gold precipitation from cyanide solutions on ... . 383 
Zinc Corporation, Ltd., Broken Hill, New South 

Wales 427, 930 

Lead mill 693 

Slime treatment at 657 

South Blocks mine. New South Wales. Australia 25 

Zincblende, Joplin district production 100, 115, 633 

Kansas production. 1913 115 

Missouri production, 1913 115 

Oklahoma production, 1913 115 

Zinc-lead Held, Wisconsin 150. 664 

Zmlnogorsk Concession. Russian Mining Corporation 651 

Zorrltos petroleum plant. Peru 939 








ASSAYING. Parti. By C. H. Aaron $1.00 

Part II and III ( in one volume i $1.50 




CYANIDE PRACTICE 1910-13. By M. \Y. von Bemewitz $3.00 

CYANIDE PRACTICE IN MEXICO. By Ferdinand Me( aim $2.00 



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JOURNEYS OF OBSERVATION. By T. A. Riekard $3.50; gilt, $5.00 

MINE BELL SIGNALS (California i. Printed on oilcloth 50 cents 

MINE SAMPLING AND VALUING. By ( !. S. Ilerzifr $2.00 



MINING LAW IN MEXICO. By ( lourtenay Be Kalb 50 cents 

OIL PRODUCTION METHODS. By Paul M. Paine and B. K. Stroud $3.00 



PROSPECTING BLANKS. By Charles Janin $1.50 per set of three 







By J. W. Hutchinson • 25 cents 


In addition we carry the largest stock of technical books on the Pacific Coast. 




For Reliable Information 

[ Metal Mining 

Regarding ] Ore Dressing 
& 6 I Metallurgy 

\ Ore Deposits 

Turn first to the Mining and Scientific Press 

FOR more than half a century the Press has been the organ of the metal 
miner. It is owned by mining engineers, edited by mining engineers, and 
written for everyone interested in metal mining. It is the only mining journal 
maintaining editorial staffs in San Francisco, New York, and London. 
The Press has its own correspondents in every great mining center around the 
world and gets the news at first hand. In addition to authoritative articles, force- 
ful editorials, accurate metal quotations, general mining news, and many minor 
but valuable departments, the PRESS, in the first six months of 1914, printed 46 
news letters from its special correspondents in the following districts: 

Austin, Texas 
Birmingham, Ala. 
Boston, Mass. 
British Columbia 
Brussels, Belgium 
Bulawayo, Rhodesia 
Butte, Mont. 
Calgary, Alberta 
Chisana, Alaska 
Deadwood, S. D. 
Denver, Col. 
Duluth, Mont. 
Guadalajara, Mexico 

Houghton, Mich. 
Isabella, Calif. 
Joplin, Mo. 

Johannesburg, Transvaal 
Juneau, Alaska 
Kalgoorlie, West. Aus. 
Lead, S. D. 
London, Eng. 
Lunning, Nev. 
Magalia, Calif. 
Manila, P. I. 
Marquette, Mich. 
Melbourne, Vic. 

Mexico City 
New York City 
Porcupine, Ont. 
Pearce, Ariz. 
Platteville, Wis. 
Reno, Nev. 
Rochester, Nev. 
Salt Lake City, Utah 
St. Louis, Mo. 
Sydney, N. S. 
Toronto, Ont. 
Victoria, B. C. 
Washington, D. C. 

The Best at Any Price — Why Pay More? 

$3 per year 

$4 in Canada 

$5 abroad 


420 Market Street 
San Francisco 

300 Fisher Bdg. 

1308 Woolworth Bdg. 
New York 

734 Salisbury House 
London, E. C. 

Annual Keview Number — fnce Iwenty-rive i^ents 



Whole No. 2789 "SS&T 


Slnflc Copies. Ten Cetili 











Aurora Consolidated Mines Company 
Buckhorn Mines Company - 

Cinco Minas 

Commonwealth Mining & Milling Company 
La Lucha y Anexas . - 

McEnaney Mines - - - - - 
Midas Gold Mining Company 







cafc/execrass.- Lurco SAN FRANCISCO, CALIFORNIA, U.S.A. co«#e. 1 «»"^»5j^«*« a ';' 


January 3, 1014 

... (oi 

January 3, i''i« 



Home Office: Shoaff Bldg., Fort Wayne, lad.— lac. July, 1912— London Office: Salisbury Home, London Wall, E.C. 
Sole Owners and Manufacturers for the United States and All Parts of the World of All 


Subsequent to January 1st, 1912, in Addition to Other Patent Rights 




Double Deck Sand Table •+■ 


-*- Double Deck Slime Table 

Single Deck Sand Table * 

(Latest Ideal Head Motion used on above Reciprocating Machines) 

Multiple Deck Tilling Slimer ■»■ Patented 

' Built as six or twelve deck machine) 

Classifier « 

-►Single Deck Slime Table 

-► For Finest of Slimes 


-*- For Coarse and Fine Sand 

Each of the above machines has been thoroughly tested at the Miami 
Copper Company and has in actual test demonstrated its superiority. 


Full data sent on request 

The Drill With The "Down Keep" 

You are no doubt looking for the most 
economical Rock Drill — the one which 
will save you money and not always be 
in the hands of the repair man. If you 
have not tried a "Cleveland," do so, and 
be convinced as to its speed, efficiency, 
and reliability. 


Many features of "Cleveland" Drills 
will appeal to you once you see them 
but if you will not give us a trial, we 
both lose, 
i Write for Catalog No. 8. 

The Cleveland Rock Drill Company 

6410 Hawthorne Avenue, Cleveland, Ohio 

Los Angeles. Cal.: Smith-Booth-Usher Company. Ishncmmg, Michigan: P.O. Box .34. 

Salt Lake City. Utah: Salt Lake Hardware Company. Butte. Montana: Western Mining Supply. 

Wallace. Idaho: Coeur d Alone Hardware Company. N, ' w > " rk City, *> <■ h " rch Street. 

Pacific Coast Agents : The D. n. Demarcst Company. 503 Market Street. San Francisco, Cal. 


January 3, 1914 

THE above illustration shows three of the four 
double clutched drum electric hoists, built for 
the Witherbee- Sherman Company and installed at 
their Iron Mines at Mineville, New York. 

These hoists were sectionalized to go through a four foot by four foot shaft 
and are used underground. 

They are built for 3000 foot depth to operate one or both skips in or out of bal- 
ance and hoist 14,000 lbs. of ore per trip at a speed of 1200 feet a minute. 
Inclination of shaft 40 degrees from horizontal. 

The drums are 7 feet diameter by 3 feet face and are driven through a single 
reduction of Wuest gears by two 300 H. P., 500 r.p.m. induction motors. Each 
drum is equipped with a Nordberg axial plate clutch and post brakes, hand 
operated, and a safety stop which automatically slows down the motors and 
applies the brakes. 





Nordberg Manufacturing Co. 

Milwaukee, Wisconsin 

Manufacturers of High Efficiency Corliss Engines ; Uniflow Engines: Poppel Valve Engines; 
Air Compnssors; Blowing Engines; Hoisting Engines; Pumping Engines ; and other machinery. 




January :| . 1914 











y -i. 




Complete Electric Driven Compressors 
For Crowded Quarters 

The above illustration shows a "Short-Belt-Drive-Electric Air Com- 
pressor," installed underground, in the Humboldt Mine, Ouray, 
Colo. A chamber was cut out of the solid rock, 1200 feet below 
the surface, to contain it. This compressor has been running for 
over a year, giving perfect satisfaction and requiring no care except 
for the necessary lubrication. 

The Compressor is of the well known "Imperial" Dirt-Proof, Self -Con- 
tained, Self-Oiling, Duplex Compound Type, embodying all the features 
necessary to the highest efficiency and economy in air compressing. 

The Short-Belt-Drive is a refined method of power transmission, 
especially adapted to this service. It reduces belt tension, gives a 
greater belt contact and effects economy of space. 

This Company is prepared to furnish outfits, such as the above, 
complete from stock — Compressor with " Imperial " Short-Belt- 
Drive attachment and Endless Belt, Motor with pulley, slide rails 
and starter, "Imperial" Combination Regulator, foundation bolts, 
washers, necessary wrenches, etc., ready to connect to station wiring 
and receiver piping. 

BULLETIN No. 3312 


New York 


Offices the World Over 























.January 3, 1914 




the great physical labors of the world are going 
forward, it is essential for the success of the under- 
taking that only such equipment be used which is 
most capable of performing the task. 

One of the best proofs of the unusual worth of 


is the number and kind of works on which it is to 
be found to-day bearing the brunt of the burden. 

Hercules wire rope is the result of years of careful and 
painstaking study of wire rope material and wire rope con- 
struction. In fact, Hercules rope is the result of a determi- 
nation to produce a wire rope of maximum efficiency, and 
therefore, no detail of its construction is too small to be 

In order to be adapted to the various wire rope working 
conditions, Hercules rope is made in a variety of con- 

Catalogs furnished and further information gladly given. 


Established 1857 

Wire Rope and Aerial Wire Rope Tramways 

New York 

916-932 N. First St., St Louis 

Chicago Denver Salt Lake City San Francisco 

.lamii.rx I, l'»l I 




INTERRUPTION OF SERVICE by washouts, landslides and snow 
blockades — and such interruptions often wipe out the carefully planned 
economy of various surface systems — is unknown to users of The Leschen 
Systems of aerial wire rope tramways. 

The details, quality and workmanship, design and manufacture of all 
Leschen tramways are the outcome of many years of practical experience 
in this class of work. Their efficiency has been proven by years of 

If you will refer your transportation problems to us, we will gladly 
have our Engineering Department make a careful study of same and 
advise you as to how your need can be best served. 



Established 1857 

Wire Rope and Aerial Wire Rope Tramways 

916-932 N. First St., St. Louis 

New York Chicago Denver Salt Lake City 

San Francisco 



V We are progressive and as proof of this practically every important metallurgical con- 
cern in this and other countries is entrusting their work to us. 

<J It affords us great pleasure to offer and recommend to these concerns and all users of 
metallurgical machinery, the tried improvements in processes for the treatment of ore, which 
are entrusted to us from time to time by the leading engineers and managers. 

We Take Pleasure in Announcing That 


General Manager of the Great Washoe plant of the Anaconda Copper Mining Company, has 
arranged with us for the manufacture and sale of his improvements in blast furnace con- 

<J This will enable us to assist our clients in greatly increasing their smelter capacity, 
due to the fact that the 


will permit the running of a higher silicious charge with greater recoveries from gold, silver, 
copper and lead ores, and at the same time greatly reducing their fuel consumption. 

C Your furnaces may be coupled together at a small expense and operated as one unit, 
making available all the benefits claimed in connection with such an arrangement. 

<J A bulletin is now in course of preparation describing the MATHEWSON FURNACE 
PRACTICE, and we would be glad indeed to have our friends forward us their requests for 
copies pending the time of its publication. 


Januan 3, 1 * ■ 1 1 


The Mathewson Blast Furnace 

*l The illustration below shows a little more than one-third in length of one of the fur- 
naces in use at the works of the Anaconda Copper Mining Company, Anaconda, Montana. 

<J The furnace is 88 feet long, and was formed by the coupling together of a number of 

<J At "A" are shown the water jacketed crucibles which are the important feature of 
Mathewson furnaces. 

<I At " B " are shown the usual base plates. 

<J A furnace 80 to 100 feet long may be accommodated by two crucibles. Two 20 to 30 
foot furnaces may be coupled by the use of one crucible. 

<I It would afford us great pleasure to recommend the best method for the adoption of 
this construction by operators now running two or more separate small furnaces upon receipt 
of drawings showing the layout of the present equipment. 

Traylor Engineering & Mfg. Co. 

New York Office : 36 Church St. Works : Allentown, Pa. 

Western Office: Denver, Colorado 

Agents. Mexican Steel Products & Machinery Co., Apartado 122 Bis., Mexico City. 

Has The Great White-Light of 

Blazed Across 

If you have not had experience of Hoists built by Wellman-Seaver-Morgan, you 
have not seen this light. But "truth is mighty and will prevail," and there is that 
within the facts concerning Wellman-Seaver-Morgan Service which finally must burn 
into the consciousness of every Mining Engineer. 

A consideration of prime importance is the consultation of experts — yours and ours 
— the men on the ground who know every rock and rib of the prospect, and the 
men at the plants of Wellman-Seaver-Morgan, where 40 years of hoist-building has 
evolved a design for every conceivable condition of operation. 

Every Mining Man is a student of Hoisting Prob- 
ELECTRIC" is an important text book relating 

The Wellman-Seaver-Morgan Company 

Engineers and Manufacturers 


Branch Ollices; NEW YORK, Hudson Terminal. DENVER. CM Ideal Building. MEXICO, D. F, Apartado 1220. 14a de Guerrero 3326. 

.1 Miliary 8, 1914 



Truth About Hoisting Machinery 
Your Vision? 

The co-operative advice "goes with the machine" and is as much a part of it as far as 
the purchaser is concerned, as the materials of which it is constructed. 
It is evident that 'he building up of a corps of Engineers who are Hoisting 
Machinery Specialists must have been coincident with the building up of a manu- 
facturing business able to train and support such a body. 

There must be leadership everywhere. Risk and foresight and devotion have given 
it to Wellman-Seaver-Morgan in the building of hoists, and the fact of that leadership 
may be resolved to your advantage. 

to this subject. WRITE AND WE'LL SEND IT. 

The Wellman-Seaver-Morgan Company 

Engineers and Manufacturers 


Brunch Ollices : NEW YORK, Hudson Terminal. DENVER, 611 Ideal Building. MEXICO. D. F„ Apartado 1220. 14a de Guerrero 3326. 



January 3, 1914 


| |in$Pole| 

Get all good features in one G-E Mining Locomotive 

Mine service demands rolled steel side frames and commutating pole 
ball bearing motors. The G-E mining locomotive has these features, whose 
success has been assured, and every other essential requisite necessary to 
meet mine haulage conditions. 

The rolled steel side frames give great strength. In some G-E mining 
Locomotives they are six inches thick. 

The commutating poles insure perfect commutation and lengthen brush 


Ball Bearings Banish Repairs 

The ball bearings used for G-E mining locomotives motors prevent 
armature from touching pole pieces, keep oil out of motor, maintain commu- 
tator in alignment, cut down bearing friction and reduce quantity of lubri- 
cant required. 

Our mining locomotive specialists are ready to give you all desirable 
features in one G-E mining locomotive. 

General Electric Company 

Atlanta, Ga. 
Baltimore, Md. 
Birmingham, Ala. 
Bnlse, Idaho 
Huston. Muss. 
Buffalo. X. V. 
Butte. Mont. 
Charleston, W. Va. 
Charlotte, N. C. 
Chattanooga. Tenn. 
Chicago, 111. 
Cini iunati, Ohio 

Cleveland, Ohio 

Columbus, Ohio 
Davenpoit. In. 
Dayton, Ohio 
Denver, C >\<>. 
Detroit, flllch., 
(Office of Agent) 
Elmira. N. Y. 
Erie. Pa. 
Fort Wayne, hid. 
Indianapolis, Ind. 
Jacksonville, Ha. 

Largest Electrical Manufacturer in the World. 

General Office: Schenectady, N. Y. 


Joplin, Mo. 
Kansas City, Mo. 
Keokuk.' In. 
Knoxville, Te"nn. 

Los AiigL-Us, Cal. 

Louisville. Ky. 
Ma ttoun. 111. 
Memphis. Tenn. 
Milwaukee, Wis. 
Minneapolis, Minn. 

Nashville, Tenn. 
New Haven, C mn 
New Orleans. La. 
New York, X. Y. 
Niagara Falls, N. 
Omaha. Neb. 
Philadelphia, Pa. 
Pittsburgh. Pa. 
Portland, Ore. 
Providence. R. I. 
Richmond, Ya. 
Rochester. N. Y. 

For Texas, Oklahoma and Arizona business refVr to Southwest <;. mral Electric Co.. (formerly Hobson Electric 
El Paso. Houston and Oklahoma City. For Canadian business n-f'-r to < 'muutian C.-nernl Electric Company. Ltd. 

Salt Lake City, Utah 
San Francisco, Cal. 
St. Louis. Mo, 
Schenectady, N. Y. 
Seattle. Wash. 
Spokane, Wash. 
Springfield, Mass. 
Syracuse. N. Y. 
Toledo. Ohio 
Washington, D. C. 
Youngs town. Ohio 

Co.) — Dallas. 

Toronto. Ont. 

Junuan 8, I'M t 


1 : 

"For 72 years" 

COR 72 YEARS we have been 
making wire rope from the 
highest grades of steel, which has 
proved by thorough and exacting 
tests to be best adapted for good service. Since 
1841 the recognized standard has been 

Wire Rope for Mines 

For long spans, heavy loads, durability, and in fact any 
service where wire rope is used, we can refer to installa- 
tions all over the world. Ask us for literature and prices on 

Round and Flat Rope for Mine Hoists — Haulage and 
Transmission Ropes — Drilling and Casing Lines — Logging 
Rope — Bare and Insulated Iron — Steel and Copper Wire 
— Wire Rope Fastenings and Pulleys — Wire Cloth and 
Netting — Wire Nails — Electric Wire, bare and insulated. 

John A. Roebling's Sons Co. 


624-646 Folsom St, San Francisco 

Trenton and Roebling, N. J. 

Other Warehouses and 

Offices at 

Seattle, Spokane and Aberdeen, 


Los Angeles 



"Since 1841 



January 3, 1914 

Rocfa Crusher Shaft, 14 inches In 
diameter restored to service with 

Thermit in 72 hours. 

Have Such Breakdowns As These | 
Occurred and Tied Up Your Plant? 

Thermit Welding Will Restore Them to Service Quickly and Economically. 

What Thermit Is. 

Thermit is ;i mixture of granu- 
lated aluminum and iron oxide 
which, when ignited, reacts, pro- 
ducing superheated liquid steel 
at a temperature of 5400°F. 

How Welds are Made. 

A broken section is lined up 
and a mold built around the frac- 
ture. The fracture is brought to 
a red heat by a special pre-heater 
and the Thermit mixture is placed 
in a special crucible so that when 
the Thermit reaction is over, the 
liquid steel can be poured from 
the bottom of the crucible into 
l In- mold, and being at such a high 
temperature, is sufficiently hot to 
melt the sections with which it 
cornea in contact and amalgamate 
with them to form a solid mass 
when cool. 

Broken crank shafts, mine 
hoist shafts, gear wheels, fly- 
wheels, coal cutters, engine 
frames, rock crusher shafts, and 
many other heavy sections can be 
restored to service in one or two 
days at slight expense and often 
effect a saving of thousands of 
dollars in time and repair costs.- 

When you realize the advan- 
t;itii-s to be derived from the use 
of Thermit for repairs, you will 
install the process at once. 

' >,,,■ pamphh I No. S93S describes II,, 
process in detail and contains a com- 
plete net price list of materials and, 

Large Flywheel Spoke Welded wltl 
Thermit without removing It from 

— ; .. ... - 


#. r 


'--•- 3 

12 -inch Mine Hoist Shaft repaired 
In 48 hours with Thermit without 
removing it from place. 

Spoke of Coal Cutter Repaired with 

Write for it today. 

Welding Locomotive Frame with 
Thermit without taking down 

9-inch Shaft repaired with Thermit. 


WILLIAM C. CUNTZ. General Manager 

90 Weil Street, New York 

329-333 Follom St. , Sa» Francisco. 7300 So. Chicago Ave., Chicago. 103 Richmond St W., Toronto, Ont. 

January :>. 1914 


1 • 

"For 56 years" 


For Hydraulic Mining, Irrigation, Dredging, Power Plants, 
Suction and Discharge for Centrifugal Pumps. 


has been used for conveying water under pressure 
for more than half a century. The results ob- 
tained by actual practice have demonstrated that if 
properly made and designed for the purpose in- 
tended, it is equal to cast iron pipe or lap-welded 
tubing and much cheaper. Riveted iron pipe made 
by us 35 years ago is doing good service today. All 
pipe orders are executed under the immediate super- 
vision of an experienced, practical and competent 
foreman, and workmanship is carefully inspected. 
Every pipe system designed and manufactured by 
us carries a guarantee as to strength and durability 
and fitness for purpose intended. 

All sizes from 4 inches to 48 inches diameter. 



Doable and Single — Black or Red Steel and Galvanized 

50 YEARS experience ; employment of skilled me- 
chanics; operating modern machinery; using best 
quality of steel sheets specially rolled for casing 
enables us to produce a superior quality to meet the 
requirements of well-borers who pronounce 

Ends of every joint are squared on a lathe to 
make a perfect contact where the joints meet in the 
column. There are wells in Santa Clara Valley, 
California, using riveted iron casing made more 
than 50 years ago which are in as good condition 
today as when first put down. 

Write us for literature and prices. 


Established 1858 

557 Market Street, San Francisco 



Januarv 3, 1914 



(Especially the "White Star" Valve) 


Q 1. All bodies symmetrically designed and well proportioned. 

Metal distributed to meet most wear. 

Note thickness of Diaphram. 
Q 2. Union bevel ground joint connection between body and bonnet. 

Red lead or cement unnecessary to make it tight. 

Threads on outside of body where steam can't reach them. 

3. Easy method of renewing Discs an Invaluable Feature found only in the 
Powell Valves, makes them almost everlasting. 

4. Observe acme threads on stem "D" admitted the best for wear. 
Can be re-packed under pressure. 

5. All these working parts made to gauge and are interchangeable. 
Every valve is tested to double its working pressure and are unconditionally 

Ask your dealer for Powell Valves, or write us 


Cincinnati, Ohio, U. S. A. 

Julian S, P'14 



Milling Plants and Equipment 

By reason of its shop equipment, organization and experience, the D. D. 
DEMAKEST COMPANY is peculiarly fitted to design and erect reduction, con- 
centration and cyanidation plants. We select and design the equipment from 
a standpoint, not only of engineers and metallurgists, but from that of prac- 
tical men in the field, whose ideas affect greatly the cost and convenience of 
operation. In our contracts, we assume the responsibility of each unit and 
guarantee the efficiency of the entire mill. The result is a plant at a lower 
first cost, higher efficiency, and lower cost of operation, than if the mine owner 
or his engineer buys the plant "piece-meal." 




The PACIFIC Roek Drill is distinctively a Western 
drill, made in the Wesl to meel Western conditions. One 
distinguishing Feature is the fact that the guide lugs on 
the cylinder and the corresponding seats on the shell are 
not in the same plane, thus absolutely preventing side plajr 
when the guides and seal become worn. It. is notable be- 
cause of its low cost of up-keep, few wearing parts. ligbJ 
weight, variable stroke, and simple design. 

Pacific Stamp Stem Guides 

o- i There are but two mdepend- 

iimple ent pilI . ts _ t i le Q u ide Frames. 

on which no wear comes, and the Guide 
Shells that are renewable. 

No holts, nuts, keys, wedges Labor 

or other devices are ncces- c . 


sary to secure Pacific Guides 

in the Guide Frame. They require but an engine 

a casual inspection from the operator. vions. 

A»k for Guide Circular No. 27. 

Pacific Guide Frames are Durable 
made ot the best materials, 
and as no wear comes on them, their 
life is practically unlimited. 

Pacific Guides are not mai 
up of rough castings, but 
are machine finished like 
The advantages are ob- 


Cornish Pumps 

We are specialists in the design, manufacture and installation of 
Cornish Pumps. Our experience involves more than 20 years' suc- 
cessful practice. We can point to many installations where our 
pumps are daily demonstrating their superiority over the so-called 
"modem pumps." both for mine drainage, and the handling of tail- 
ings, slimes, and concentrates in milling plants. Send for details. 


503 Market Street 

San Francisco, California 



•Januarv 3. 1914 

S-mbif root Hold 1 *r- -i lie.- \ft-r Two Seasons Work. Buili by us lor inmachuck Dredging » <> near D.-ering. Alaska. 

Your Dredging Problems 

can be solved correctly by our engineers. Are you in doubt 
as to just the best way to handle your gravel ? Tell us your 
difficulties and we will give it the individual attention it de- 
serves. We will do it right, because we jjive our 
entire time to this work. 

The Union Construction 


is the Only Exclusive Dredge Building Company in America. 

We have built more gold dredges in Alaska than any one else, 

and have the distinction of being the builders of the 

only successful tin dredge in America. 

Tell us your requirements. We would like to send our catalog with photographs 
and description of our work. Write today. W E K X O W H W ! 

Union Construction Company 


604 Mission Street 


Western Union and Bedford McNeill Codes. San FranciSCO, California fable Address: "Unconco." 

Consulting Engineers on Dredges for Fraser & Chalmers, London, Eng. 

1**1 1 

\1l\l\i. WD m II Mil |i l'KI SS 



Does this justify a motor truck? 

Suppose you are crushing one hundred tons per 
day with your stamps, and everything >s moving along 
lik. clockwork. Your daily average gross revenue is 
about $600. Tlii- null i- twentj odd miles of hard haul 
from the railroad. Fin. I 

One day • • f the cam shafts breaks without warn- 
ing. A new on.- is ordered to .■huh- l.\ express. Half 
the mill must lie idle until the nen shaft is delivered 

ami install.'. I. Tin idle stamps result in a loss .,1' £12.50 

per hour. 

It "ill take the mine team twenty-four hours to 
make tin- round trip t.. tin- railroad. 


-.lit from the mill can deliver the shall in less than five hours. 

Here is an emergency of frequent occurrence, in which the 
truck .an save at least $240. This justifies a motor truck. 

A mine need not be so remotely situated or the conditions 
so severe as at this mine to prove a motor truck a profit 
maker. The truck can do the same amount of work as per- 
formed by from three to six horses. It lowers labor expense 
now required to care for the horses (or mules). The truck 
can operate regardless of weather conditions which in- 
capacitate or kill horses. (Experience shows that a horse 
wears out in five years.) 

If both cam shafts should break, the mill would be forced 
into complete idleness, but the truck will require no feed. 

bedding or attendance while nol working. It can deliver 
new shafts or other machinery promptly, and when the mill 
is working again, the truck will haul two or three shifts per 
day as long as necessary. I'l will carry overload if the 
emergency demands. This justifies a motor truck. 

A MORELAND DISTILLATE Motor Truck operates with a 
fuel saving of at least fifty per cent over any gasoline truck. 
Distillate contains approximately twenty per cent more power 
per gallon than does gasoline. Does this justify a MORE- 
LAND DISTILLATE Motor Truck? Wo have proved it to 
many men in whose business heavy hauling is an important 

Write for free information, blue prints, etc., stating your road conditions, length 
of haul, grades, nature of product to be hauled, etc., and allow us the privilege 
of submitting yon an intelligent proposition for your special requirements. 


Branches : 

San Francisco, 4th and Harrison Sts. 
Fresno, San Diego 


Factory, General Offices, Salesrooms: 
1701-1751 No. Main St., Los Angeles, Cal. 



If there is a way to meet them properly with 


the ALBERGER staff will find that way. 

To insure the ultimate possibilities for success and economy in 
your installation, wouldn't you be glad to place your problem 
in the hands of highly trained and experienced engineers ? 

The ALBERGER staff will supply exactly that kind of service. 

Alberger Centrifugal Pumps 

500 g. p.m. 1400 ft. bead 

1750 r. p m. 72 "r efficiency 

E i ton-stagi Hotoj Driven Turbine Pump. 

correct principles are the most successful in meeting the 
rapidly increasing application of CENTRIFUGAL PUMPS 

Let us send you our Catalog D-10. 



:irsn St. Louis Boston BanFranclsco KewOi 

.I.iniiun t, 1914 


J I 




For Hydraulic Mining, Water Supply, Compressed Air, 

Exhaust Steam, Etc. 

Lighter, stronger, more rigid and can be installed for 
lower cost than any other pipe of equal capacity. 
Galvanized or asphalted, with bolted or flanged joints. 

A Standard For Over Forty Years 




In Units from 10 to 400 H.P. 

Made sectional, if desired, for mule-back transportation. Strong 
in construction, with low cost for operation and maintenance. 

Heavy Steel 
Plate Cyanide 
and Agitation 

Foundry and 
Machine Work 







Abendroth & Root Manufacturing Co. 


SALES OFFICES : 50 Church St., New York, N. Y. 




Roessler & Hasslacher 
Chemical Company 

100 William Street 






(Old Standard) 

39-40% Cyanogen 

Cyanide of Sodium 


(New Standard) 

50-52% Cyanogen 


"V T^X 

.I.mimrx >. I'M t 



There are Three 16 Cubic Foot Marion Elevator Dredges 
in the Bonanza Basin near Dawson. 


where work can be done only during a few favor- 
able months, the demands on Gold Dredging 
Equipment are most exacting. During these few 
working months men and machinery are keyed 
to their highest pitch. Output — big output must 
be had. That's why Marion Elevator Dredges 
are used — they stand up under the test — they take 
the peak load and walk away with it. Marion 
Dredges are designed right — they are built right. 

Our Engineers are at your service 



DENVER: Morse Bros. Machinery & Supply Co. 

SALT LAKE CITY: Harris Brothers 

MEXICO CITY: Consolidated Iron & Equipment Co. 

Vancouver, Seattle, Spokane, Tacoma, Portland, San Francisco : 

CHICAGO: 1442 Monadnock Block 
NEW YORK: 50 Church Street 
ATLANTA: 141 1 Candler Bldg. 

E. P. Jamison & Co. 


International Engineering 
Congress, 1915 

San Francisco, Sept. 20-25 

in connection with the 

Panama-Pacific Exposition 

There will be held in San Francisco in 1915 a general international 
engineering congress under the auspices of the following five national 
engineering societies : 

American Society of Civil Engineers 

American Institute of Mining Engineers 

The American Society of Mechanical Engineers 

American Institute of Electrical Engineers 

The Society of Naval Architects and Marine Engineers 

The sessions will be held in 10 sections and the proceedings will be 
published in 10 volumes of about 500 pp. each, with a somewhat smaller 
volume containing all general proceedings and an index digest of all 

The subdivision into sections with titles of volumes of transactions 
are as follows: 

Vol. I The Panama Canal 

Vol. II Waterways and Irrigation 

Vol. Ill Municipal Engineering 

Vol. IV Railways & Railway Engineering 

Vol. V Materials of Engineering Construction 

Vol. VI Mechanical Engineering 

Vol. VII Electrical and Mechanical Engineering 

Vol. VIII Mining Engineering and Metallurgy 

Vol. IX Naval Architecture & Marine Engineering 

Vol. X Military Engineering 

Engineers throughout the world are invited to become members 
whether or not they may be able to attend the Congress. 

The membership fee of $5.00 will entitle holder to the volume of 
general proceedings and index digest and to any other single volume 
according to choice. Other volumes may be subscribed for according 
to a sliding scale depending upon the number of volumes taken. 

Circulars giving full information accompanied by form of application 
for membership will be forwarded on request. 


W. A. GATTELL, Secretary 

Foxcroft Building, 

jHinmr\ 3, I'M I 



The Wedge Mechanical Furnace 


Conservation of Heat 

Multiple hearth Wedge Roasting Furnaces conserve heat, for the fol- 
lowing reasons : 

The central shaft need not be cooled by air or water. It is protected 
from the roaster gases by special fire brick. 

Each arm having its independent air or water connection, the cooling 
of the arms may be regulated accordingly. 

The top of the furnace is used as a dryer hearth. Heat otherwise 
lost through the top arch is absorbed by the ore fed to the furnace, ex- 
pelling moisture and bringing the temperature of ore, when entering the 
first roasting hearth, closer to the required roasting temperature. 

Write us, stating analysis of ore, concentrates, mixture or material you desire to 
roast, characteristics and physical condition of same, number of tons to be treated per 
twenty-four hours, and results desired in the calcine. 

Wedge Mechanical Furnace Company 



International Smelting & 
Refining Company 

New York Office 



Gold, Silver, Copper 
and Lead Ores 

Smelting Works: International, Utah 


Raritan Copper Works, Perth Amboy, N. J. 
International Lead Refining Company, East Chicago, Indiana 

Ore Purchasing Department: 
621 Kearns Building, Salt Lake City, Utah 

Branch Office: 
621 Paulsen Building, Spokane, Washington 

I, l!M » 

MINING \M) 5( !l Mil l< I'Kl SS 




The Economy of This Sinker 
Must Appeal to You 

It is the most economical type of a sinker pump 

and it's so designed that it can be hoisted in a few 

onds out of the way of workmen or for blasting. 

You obtain a pump occupying smallest space for a 
given delivery, so designed that it is least liable to 
get out of order, with only the discharge pipe in the 
shaft and balanced so that it can be placed in any 
position in the shaft in the 

Turbine Sinker Pump 

It is balanced by having a divided discharge pipe by 
the frame to the discharge pipe which extends up 
from the center of the frame. 

The pump is suspended by cables and sheaves from a 
hoisting drum at the surface so that it can be quickly 
raised or lowered. 

It is so designed that it will not overload the 
motor under variable head, which is an important 
feature in a centrifugal pump. 

It is provided with grit-proof bearings above and 
below the impellers so that it is impossible for grit to 
get into the main bearings. 

It is made in any number of stages, the six stage, as 
illustrated, being adapted to operate against any 
head to 200 feet. 

And it combines all of these economic features with 
none of the valve troubles incident to old style 
plunger pumps — there's nothing about it to get out 
of order — just the rotating impellers keyed onto the 
main shaft operating in grit-proof chambers. 

Write for the complete story. The most 
complete centrifugal pump catalogs ever 
issued, Nos. 117 and 124, for the asking 
if you only say you want them. 

The American Well Works 

General Office and Works: Aurora, 111., U.S.A. 
Chicago Office: First National Bank Building. 



January 3. 19U 


Large Diameter Lap Welded Pipe 

Sizes 12 to 72 inches. Thickness % to 1!4 inches. Lengths up to 40 feet. 

Coated with the highest grade Mineral Rubber Asphalt Coating. Each length subjected 

to Hydraulic Test 50% greater than specified working pressure. 


Our Prices and Prompt Deliveries will interest you 
LAP WELDED PIPE CATALOG sent on request 

American Spiral Pipe Works 




January 8, 1914 


Lower Costs and Better Results 

Both Advocate Strongly the Use of 

Justrite /f aff-sf)/f/ C ar bide l amps 

in Your Mine 

Look at the new lever feed: Simply moving 
the lever to right or left increases or decreases 
the flow of water to just the amount necessary. 
This permits a strong, steady light always and no 
waste of carbide. 

Look at the capacity: When 
the miner starts down into the 
shaft with his Justrite, he has 
enough water and carbide in the 
lamp to burn 4'. : hours, a full 
half shift. You know the time 
that saves. 

Look at the feed valve per- 
fectly protected from clogging. 
No shaking necessary. 

Look at the simple self-lighting attachment. No 
matches necessary. 

Look at the adjustable and detachable holder 
made of strong steel wire. The miner can stick 
his lamp into the timbering just as he would a 
candle, and then turn it so as to focus the light 
on his work. 

Do You Know — 

that lighting your 
mine with candles 
or oil costs you two 
to three times as 
much as it costs 
with carbide lamps? 

Look at the polished brass reflector that is part 
of the substantial seamless drawn brass body. 
Look at the notched plate that prevents the feed 
regulator shifting. Look at the weight — only 
12 ounces when fully loaded. Look at the strength 
of the construction by which all 
parts are securely riveted not 

Then, remembering that this 
lamp costs you no more than 
other carbide lamps, answer this 
question : — 

" Can you with justice to your 
miners and yourself neglect in- 
vestigating the lower costs and 
better resultsof Justrite Half-shiftCarbideLamps?" 
Your inquiry will be promptly answered. Write. 
We manufacture a complete line of carbide 
lamps, lanterns, and supplies for Engineers, 
Superintendents, Inspectors, Shift Bosses, etc., as 
well as for miners. 
Get our catalog. 

Justrite Manufacturing Co. 




January 3, 1914 

Dodge -Zimmer Conveying System 

The Short Direct Way to Convey 
Raw, Finished and Waste Materials 

Dodge-Zimmer Conveyor Under Test in the Dodge Machine Shops at Mishawaka, Ind. 

THE economical transportation of material is the greatest problem in the mining field, 
and notwithstanding the perplexity of the individual case, there is one underlying 
thought always dominant — the upkeep cost. 

First cost has its proper consideration, as does the power cost, but the bugaboos of rapid 
wear and tear, early and frequent replacement, shut-downs, etc., most deeply concern the 
operator. In the Dodge-Zimmer conveyor we have evolved a system that comes nearer keep- 
ing down the cost and overcoming the defects of conveying machinery generally than any- 
thing yet placed on the market. The keynote of our new conveyor is simplicity — the short, 
direct way to efficiency and economy in conveying raw, finished, and waste materials. 

No conveying system is today offering such desirable features and advantages covering 
a wide range of uses, so completely fulfilling the needs of all conveying processes, nor at 
low cost of investment, requirements of power or low cost maintenance per unit of measure 
and distance traversed, than the Dodge-Zimmer. 

As a means of getting it before the trade, we have issued a handsome pamphlet carry- 
ing illustrations in halftone and line effects, with details on the general make-up. To the 
mining operator or engineer it is a message of importance well worth asking for. A request 
will bring it to you in the next mail, with any other information you desire. 

Dodge Manufacturing Company 

Elevating and Conveying Engineers 

Mishawaka, Ind. 

Dodge Manufacturing Co.. Uth and Lovejoy Sts.. Portland. Ore. 
Harron, Rickard & McCone, San Francisco and Los Angeles 

Hendrie A Bolthoff Mfg. 4 Supply Co.. Denver 

Mine «fc Smelter Supply Co.. Salt Lake City and Denver 

Januarj i l'Mi 

\ll\|\l. WD m || \ | 11 |, I'KI SS 


Pacific Gear & Tool Co. 

1035 Folsom Street 

San Francisco 

""pat ipux <^laa htokUynA ate to Ko 

You must realize that twenty-five years experience and the largest 
gear cutting plant on the Pacific Coast, render us most competent 
to advise to your best interests and to produce gears embodying 
every essential of service satisfaction. 

We are ready to quote on one or a thousand gears for any mining 
requirement. A first order will convince you that our product is 
RIGHT in every way. 

"put i|©ur yexcx frxMtfnQ tt(o toTU, CUJc fatiT&tdL£L)v 

Pacific Gear & Tool Co. 

1035 Folsom Street 

San Francisco 

Fhls illustration shows cutting: the largest gear cul in the West, itwasan 
enHTRt-nry gear required by the Pacific Gas A Electric Co. of Sun 
Francisco. We saved them fully tlir<*- weeks rime, and delivered iliis 
91-inch diain.. 8-inch face gear. That waseighl months ago, and ii 
is doing regular duly. 



January 3. 1914 





In the beginning of a placer proposition, 
accurate data as to the mineral content of 
the ground is the first essential. This the 
" Empire " Drill gives — with greater 
accuracy, in less time, at less cost, with a 
smaller initial outlay, than any other means 
of placer testing. The "Empire" here 
illustrated is one of two which drilled 4112 
feet of hole in 127 days at an average cost 
of 8.7 cents per foot. 



When it comes to working a placer 
ground, profits depend upon the dredge 
equipment. "Empire" Dredges have 
made records for low operating cost, 
durability, and large yardage wherever 
used. The "Empire" Dredge pictured 
here has handled 130,000 cubic yards 
per month at a cost of 2.4 cents per yard. 


We are the only concern in the world devoted exclusively 
to the building of placer mining machinery. To our 
unequaled facilities for manufacture and quick delivery 
we add an engineering skill and practical experience in 
placer work which is the basis of "Empire" Service. We 
will study your individual problem and advise you with 
authority not only on the best equipment but also on the 
best methods of procedure. 

Send For The "Empire" Books. 

New York Engineering Company 

2 Rector Street 

Dredge Engineers 

New York 

I'M 1 

MINING WD SCI! Nl II l« I'Rl *> 


Will make 



Drill Bits 

up to 
3 in. wide. 

Every bit 

made to 

the exact 


Using less 


50 feet 

of air. 


and easy 

to operate. 

2500 lbs. 

Is guaran- 
for one 

Is, strong 



there are 

no springs 

or delicate 

to break. 




of space. 

Price complete with all necessary Dies and Dollies F.O.B. 

Denver, Colorado, $800.00 


T. H. PROSKE, 3309 Blake St., Denver, Colo., U. S. A. 



January 3. 1914 

The Slogan of the Cameron — "Character: rhe Grandest Thing." 

In Close Quarters Underground 

You will find 

Cameron Centrifugals 

the most convenient, and ultimately by far the most 
economical pumps for keeping the mine dry. 

_, Cameron Centrifugals are compact, so that they can 

Compactness be set in the frequently-contracted space available 
for pumping stations underground. 




Every part of these pumps is readily accessible. Note 
the horizontally-split casing. By merely lifting the 
upper section the whole interior is exposed to view. 

Their efficiencies are high. This "CAMERON" ad- 
vantage is realized to the full in mine pumping, where 
the pulls are long and very seldom interrupted. 

Exact care in manufacture and great simplicity of 
design renders the up-keep of "CAMERON" Cen- 
trifugal Pumps very low. 

Bulletin S-D-68 tells the full 
Cameron story. Write for a Copy. 


11 Broadway, New York 

January '.. I'M \ 


The Precision of a Micrometer 


Ludlow- Saylor 
Double Crimped Mining Screen 

The precision of a micrometer is required to detect variation in the screened product that it 
handles, due to the DOUBLE CRIMP that is put into the wire before it is woven, preventing the wires 
from shifting or "giving" under the strains imposed, and insuring a uniformity and permanency of mesh 
that has made LUDLOW-SAYLOR a synonym for satisfaction in mining screen. 

The conditions under which 
raining screen is used are 
variable but severe, and the 
best wire made has a limited 
lease of life. But Ludlow- 
Saylor Screens, due to the 
rigidity with which they hold 
their mesh and preserve their 
accuracy of alignment, reduce 
the process of wear and con- 
fine it to the abrasive effects 
of the sand, ore or other ma- 
terial as it passes through 
the meshes of the screen. 

The precision of the micro- 
meter suggests the care that 
is taken to make LUDLOW- 
Saylor Double Crimped 
Mining ScbebSt a necessity 
where absolutely uniform re- 
sults are required and where 
"screen insurance" U desired 
in its simplest, surest form. 

Our catalogue. No. 45, is a 
compendium of information 
on screens for ail purposes and 
explains in detail the virtues 
of the Double Crimp. 

Ludlow-Saylor Wire Co. st. Louis, mo. 



•January 3, 1914 

When You Order 
Be Sure To A 
Specify f 


An order which simply says "pipe" is not complete. 

"Pipe" may mean any pipe — and there is about as much 
difference in pipe as there is in men. 

<| All pipe should be the standard — tested — 
known brand — "NATIONAL"— if you wish 
your pipe lines to be permanent and ultimately 
most economical. 

(J The following paragraph would be a good 
one to cut out and paste down where you and 
every one else would see it when ordering pipe: 

q "All pipe to be 'NATIONAL' Pipe as manufac- 
tured by National Tube Company, sizes 34 inch 
and larger to have the name 'NATIONAL' rolled in 
raised letters on every few feet of length, and on the 
smaller butt-weld sizes the name 'NATIONAL' to 
appear on the metal tag attached to each bundle 
of pipe." 

Ask for N.T. C. Bulletin No. 12A — this bulletin has recently been enlarged 
and revised and contains a summary of information about "NATIONAL" 
Pipe — When you read it you will keep it on file for permanent use — It's free. 

CTo readily Identify "NAT ION A Im- 
material and as protection to manu- 
facturer and consumer alike, the prac- 
tice of National Tube Company is to 
roll In raised letters of good size on 
each few feet of every length of welded 
pipe the name "NATIONAL" (except on 
the smaller butt-weld sizes, on which 
tills Is not mechanically feasible: on 
these smaller butt-weld sizes the name 
"NATIONAL" appears on the metal tag 
attached to each bundle o'f pipe). 



Name Rolled In Raised Letters on National Tube Company Pipe 

CWhen writing specifications or or- 
dering tubular goods, always specify 
■NATIONAL," Pipe and Identify as in- 

CIn addition, all sizes of "NATIONAL" 
welded pipe below four or five Inches 
are subjected to a roll-knobbllng pro- 
cess known as Spellerfzing to lessen 
the tendency to corrosion, especially in 
the form of pitting. This Spellerizing 
process is peculiar to 'NATIONAL" 
pipe, to which process National Tube 
Company has exclusive rights. 


District Sales Olllces: Atlanta, Boston. Chicago. Denver, Kansas City, Now Orleans. New York. Philadelphia, Pittsburgh, St. Louis, St. Paul, Salt Lake City 

Paclllc Coist Representative! : l\ s. STEEL PRODUCTS Co.. San Francisco, Los Angeles, Portland, Seattle 

Export Representatives: U. S. STEEL PRODUCTS CO.. New York City 

J*jniBr\ 3, I'M I 




Suction Dredges Centrifugal Pumps 

Yuba "Ball Tread" Tractors 

Yuba No. 14. Ready to Operate, December 18th, 1913. 

Yuba No. 14, now in operation, is equipped with buckets of 16 cu. ft. capacity each, 
and was designed and built by The Yuba Construction Company for the Yuba Consoli- 
dated Gold Fields. This dredge is capable of digging 70 feet below water level. This is 
the sixth dredge of 15 cu. ft. capacity, or larger, that we have built. Yuba No. 14 has a 
steel hull, steel housing and steel gold saving tables, and is the fifth All Steel dredge 
we have built to date. 


A 9-cubic foot dredge for the Oroville Dredging Co., Ltd., Colombo, S. A. 
Natoma No. 7 — A 9-cubic foot dredge for Natomas Consolidated of California 
Natoma No. 8— A 15-eubic foot dredge for Natomas Consolidated of California 
Natoma No. 10 — A 15-cubie foot dredge for Natomas Consolidated of California 
Yuba No. 14 — A 16-cubic foot dredge for Yuba Consolidated Gold Fields 

In addition, we have had a wide experience in designing and building dredges for tropical countries as well as 
for properties where inaccessibility demands smaller and lighter dredges. 

We are prepared to design and construct gold dredges with either steel or wooden 
hulls, equipped with buckets of from VA cu. ft. to 16 cu. ft. capacity each. 

We represent the Bucyrus Company on the Pacific Coast and in Alaska and the Orient for Placer Dredge Machinery. 

The Yuba Construction Company 

Works : Marysville 

Main Office 

433 California Street 
San Francisco, Cal. 



January 3, 1914 

The Wilfley Table is so widely 
known and so universally pre- 
ferred that there is not the 
slightest chance for you to 
be misled in the selection of 
a Wilfley. It has attained its 
pre-eminence in the mining 
industry only because it has 
been the most successful. 

Ask the users — any of them, anywhere. Go to some of the 
plants in your vicinity and see the Wilfleys at work. 

Then you will know why there are over 18,000 in service — then 
you will be sure to specify Wilfleys for your plant. 

Write us for Bulletin No. 25 and further particulars. 

The Mine and Smelter Supply Company 

Denver Salt Lake City El Paso Mexico City 

New York Office, 42 Broadway 

Sole Owners and Manufacturers of the Wilfley Concentrator. 

Also Sales Agents in Utah. Nevada, Idaho. Montana for Hardinge Mills. 

January 8, 1914 




Moisture in Tailings Reduced 
to 15 Per Cent 

Unwatering Tailings 

In sluicing tailings out from a mill, 
75 to 80 per cent of the sluicing water 
may be recovered with this Classifier, 
for use again in the mill system — an im- 
portant feature where water is scarce. 

At the mill of the Ozark Smelting & 
Mining Company, Magdalena, New 
Mexico, the Ovoca Classifier is used to 
unwater the mill tailings for final stack- 
ing and re-use of mill water. The tailings 
are delivered to the Ovoca Classifier 
with about seven of water to one of 
ore by weight. 


The Classifiers were able to reduce the water in the tailings 
to 15 per cent, but the material piled up too steep and the mois- 
ture in the delivered tailings was therefore increased to 20 per 
cent, which permits the tailing to move in thick turgid streams 
down the tailings stack. See Fig. 0261. 

The angle of the slope of the tailings stack is 55°, showing 
how completely the tailings may be unwatered and at the same 
time recover a large proportion of the mill water. 



Mining and Milling Machinery 
Electric Hoists 
Richards Pulsator Jigs 
Richards Pulsator Classifiers 
Ore Crushers 


Crushing Rolls 
Mine Cages 
Stamp Mills 
Tube Mills 

COLO., U. S. A. 

Mine Timber Framing Machinery 
Revolving Screens and Grizzlies 

Automatic Samplers 
Sample Grinders 
Ore Buckets 




January 3, 1914 











Offices 911-916 Crocker Building, 
San Francisco 

Complete legal and mechanical Equipment for 
expeditiously and skillfully handling Applications 
for Patents, Infringement Suits, and everything 
legally pertaining to Patents, Trademarks, Labels 
and Copyrights. 

Patents obtained and Trademarks registered in 
every Country in the World. 

Write for our Handbook to Inventors containing over 
100 Mechanical Movements. Sent free on request. 

Attention is called to the Notices of Patents obtained 
through Us, which appear each Week in the MINING AND 
SCIENTIFIC PRESS. These notices are inserted without 
Expense to Patentees. 






January 3. 1914 




i Patented) 

Most Efficient — Most Economical — Simplest 

Modus Operandi 

The pulp is continuously transferred by compressed air through the lift-pipes from the bottom to the top of the 
tank-charge where the spouting force creates a rotary flow which extends from top to bottom of the charge, keeping 
the solution and solids in proper proportional mixture throughout the treatment. 

No Bridge 

or Side- 

No Belts 

No Interior 
■ >r Exterior 


K-< C -ntrlftigal 

This spells 
in First 
Cost and 

H ■liintation 



Water Washing 

in the same 

or any 

Series of 


Design "d 



This spoils 

and high 
of Value? 

Vertical Cross-Section (in part cut away) showing wooden tank with enlarged 
view of intake end of transfer-pipes and air nozzles designed for the agitation 
of the slimes of copper ore and flue dust in acid solution ; 

<J In this type, the Tank, Transfer-Pipes and Air Nozzles are made entirely of wood and are acid proof. 

<J When Agitation is suspended the Air-Nozzles are sealed automatically by glass or earthenware balls which pre- 
vent the acid solution or pulp from entering the air pipes. 

<J Agitation starts without trouble after suspension for the time necessary for settlement of solids and decantation 
of the clear solution, making repeated dilutions, agitations and water-washing of the pulp practicable. 

<f No payment required until the tanks are in Commercial operation for 60 days, when, if not satisfactory, the process 
may be abandoned without any responsibility to the user. 

Write for Catalog and 

Full Particulars to 


1005 Fair Oaks Ave. 

South Pasadena, Cal. 



January 3, 1914 

Air Line Transportation 


The Yellow Strand Route 

WONDERFUL PROGRESS has been made in tramway construction during recent years. 
From a comparatively crude overhead haulage system, we have gradually evolved sev- 
eral systems which in simplicity and certainty of operation and ecenomy, are miles 
ahead of any ordinary tramway. 

The reason is simple: Our tramway engineers have solved every mechanical and struc- 
tural problem, making it possible to say exactly what a tramway will do before it is erected. 

If you will tell us your conditions — the contour of the country over which you haul, 
the nature of the soil, the distance between loading and unloading points, the kind of mate- 
rial you haul — we will be able to tackle your haulage problems intelligently. 

Our advice will not cost you anything but the trouble of asking for it, and the price 
of a 2-cent stamp. 

We have many Tramways of many types in successful operation from New York to the 
Pacific Coast. 

Special carriers are made to handle almost any material from ore to logs. 

They are saving good, hard dollars for others. One may do the same for you. 

Don't you want to find out ? Ask for catalog No. 45 

Broderick & Bascom 

Branches : New York Seattle San Francisco 


January 8, 1914 


i : 


'Yellow Strand' is the most elastic steel rope in the 
world of anywhere near its strength. Without elasticity 
a rope is 'dead.' 'Yellow Strand' stretches and recovers 

'Yellow Strand' wire rope unloaded three times as 
many dirt trains in the Panama Canal as were ever 
unloaded before its introduction, and rope of practically 
every manufacture had been tried. 

These are only a few facts about 'Yellow Strand.' Let 
us send you further information and catalog No. 44. 

Rope Company 


Works : St. Louis Seattle 



January 3, 1914 






of roasting furnaces is becoming 
an important feature of all mo- 
dern installations, thereby increas- 
ing tonnage and securing regu- 
larity of operation. 

It is quite apparent that this 
control is best secured by appli- 
cation of AIR COOLING and 

which method is rapidly replac- 
ing all other systems. 

No Experiment 

Twenty 21-feet 6-inch furnaces 
operating in Arizona, and many 
others elsewhere. 

The HerrShOff SySteill of Air Cooling delivers a definite ample air 
supply under pressure to shaft and arms, keeping these parts at a safe working tem- 
perature, and all or part of this air can be returned at will for regulated supply of com- 
bustion air, thereby assisting in more rapid roasting at less cost, write for further particulars. 

Western Representatives ol 

Herreshoff Furnace Dept. 
General Chemical Co. 

New York City 

Pacific Foundry Company 

18th and Harrison Streets 
San Francisco, Cal. 

.1 Miliar;. ■! 1914 





From photograph made during tests at shops 

Double-Drum Electric Hoist For 2000-Foot Double Compartment Shaft 


Drums, each. Dla. 84", Face 50", Brake Flange 96". Hold 2000 ft. 1" Rope. Drum Gear. Dla. 9' 9W. Face 9". 
Cast Steel. Pinions. Dla., 18V4". Gearing throughout, double Horrlng-Bone Cut teeth. Post Brakes. V-shaped 
woods. Dial Indicators for 2.000 ft. of Rope. Gear Reduction 16.0S to 1. Motor ITC 5017, 300 H.P.. 575 R.P.M. 
Current. 3-Phase, 60 Cycles, 2200 Volts. Bed. extreme length 15' 9%", extreme width 26' 3V4". Extreme height 
13' 6". Height from top of I-Beams to top of Indicators 9'. Duty 9000 lbs. 800 R.P.M. Weight of hoist 72,000 
lbs. Structural steel bed to be set In concrete up to tops of I-Beams. 

THIS hoist operates in a double compartment shaft. Ordinarily it, works in balance but it 
is fully capable of operating out of balanc with the regular loads. The drum gear wheels 
and pinions are of cast steel. Each drum is keyed to its own shaft but can be operated inde- 
pendently by means of friction clutches, one on each drum gear pinion. Each clutch consists 
of a pair of Lidgerwood type, double cone wood frictions with patented cork inserts. The fric- 
tions are forced toward each other and grip between them a V-grooved friction plate. The re- 
volving motion of the friction plate is communicated to the pinion through a sleeve which sur- 
rounds and encloses the friction plate and frictions. The pinion is keyed upon an end of the 
sleeve sufficiently reduced in size for the purpose and the sleeve is bronze-bushed where it turns 
on the clutch shaft. The sleeve and pinion move freely endwise a sufficient distance to allow 
the pinion to always secure perfect meshing of the gears. 

The hoist is operated through a master controller and with full contactor control. The de- 
termined time for acceleration from rest to full speed is 6 seconds. 

"Electric Hoists Built Up To Any Size" 

UDGERWOOD MFG. CO., 96 Liberty St., New York 

San Francisco 






London, Eng. 



January 3, 1914 




Reduces tonnage costs for mines 

If you will write us, we shall gladly 
refer you to mines using our products. 


The B. F. Goodrich Company 

Factories: Akron, Ohio 

Branches in All Principal Cities 

Thtre is nothing in Goodrich Advertising 
thai isn't in Goodrich Goods 

Makers of Goodrich Tires and Everything 
That's Best in Rubber 

Junwn 8, l'.M-J 




Right-hand Side of Machine, Showing Sulphuret Box and Belt in Position. 

THE Vanner Type Concentrator, with its side-shaking table and 
traveling, endless, rubber belt, is still recognized the standard 
machine for the concentration of "fines" on gold, silver, copper, 
zinc, lead, and other ores. 

The feature of the Risdon Johnston Concentrator is the sus- 
pended iron-frame table (hung by four non-parallel suspension links) 
which, when oscillating, imparts a panning motion to the belt, 
thereby making a remarkably clean and close concentration, com- 
bined with a large capacity. 

The Risdon Johnston Concentrator has found its way in all of 
the mining camps of the world. 

The Utah Copper Co. has 1184 machines in one plant — 

The Boston Consolidated Mining Co., 234. 

Send for Catalogue No. 14. It contains much detail information. 






January 3, 1914 

"We Would not Think of Going 
Back to the Old Style Wheels" 

That is quoted from a letter of a mine 
superintendent who is operating 
eighty or more cars equipped with 

Hyatt Flexible Roller Bearings 

and some of them have been opera- 
ting for over four years. 

And when it comes to economy read 
what the same letter has to say on the 
subject — "We find the Hyatt Bearings 
save oil. The roller bearing wheels 
wear long, start from rest much easier 
and run much easier. We find that 
the brakes hold much better. We 
have had very strong cars, well ironed 
all over, smashed up in wrecks and 
always found the bearings unharmed." 

It's useless for us to try to add to any 
such testimonial as that but we would 
be glad to mail you a copy of the 
letter and of our Bulletin No. 604E. 

Hyatt Roller Bearing Company 

General Sales Office, 1120 Michigan Ave., Chicago 

Works : Newark, N. J. 

Detroit, Mich. 

.lumiarv 'i. !!•!■» 

MINING AND Sell N I'll- It l'KI ss 




January 3, 1914 

We Manufacture Concentrating 
Tables for Every Purpose 

Our devices are guaranteed to 

be the most efficient on 
the market for 

either the coarsest sands 
or the finest slime overflows. 

Write for our new catalog just from the press. 

The Deister Concentrator Company 

Fort Wayne, Indiana 

By reason of demands of the Trustees of estates holding 
claims against the Glasgow & Western Exploration Co. 
Limited, that company has been put into liquidation in 
Scotland, and Mr. William Lamont of 33 Renfleld St.. 
Glasgow, has been appointed liquidator. 

The main assets of the company in question are the fol- 
lowing copper properties: The Montreal Mine, Beaver 
County, Utah, and the Copper Canyon Mine and the Copper 
Basin group situated in Lander County, Nevada. 

To facilitate a realisation of these properties a compre- 
hensive report has been prepared, and correspondence is 
solicited from substantial mining interests. 

Communications should be directed to 

JOSEPH RALPH, Assoc. Inst. M. M., 
Attorney-in-Fact for the Liquidator, 
The Glasgow & Western Exploration Co. Limited, 

416 Walker Bank Building, 
Salt Lake City, Utah. 

NING and Scientific 

"Science hit no enemy uve the ignorani.' 

Whole Ho. 2789 'SSSJT 

San Francisco, January 3. 1914 

Slngk toplrt. Irn (ml* 



Greeting 1 

Notes - 

Annual Reviews and Statisticians 2 

Our Contributors 3 

The Mexican Crisis 4 

Aluminum 5 

Production of Gold in 1913 6 


Gold and Silver Production o( the United States: 

Mint-Geological Survey Estimates 8 

l" nited States Mineral Output in 1913; estimates by 

the V. S. Geological Survey S 

Canadian Gold-Silver Production S 

What is the Matter with Prospecting? A Symposium 

(Potter H. Aldridge. Philip An/all F. IV. Bradley, P. R. 
Bradley. I). W. Brunton. Albert Bureh. George E. Col- 
lins. I), Fasken. Charles Hayden, D. 0. Jaikling. Hen- 
urn Jenninei, Benj. B. Lawrence, E. J. Longyear. John 
H. Mackenzie, H. C. Perkins, il. L. Requa. Arthur 

Thacher. Benjamin B. Thayer 9 

International Engineering Congress H. Foster Bain 14 

The National Radium Institute Arehibald Douglas 16 

Work of the National Societies: 

American Institute of Mining Engineers 

Charles F. Rand 17 
The Mining and Metallurgical Society. . . .H. M. Chance 18 

The American Mining Congress Carl Scholz 19 

The London Market T. A. Rickard 20 

Review of the New York Share Market C. S. Burton 30 

Business and Mining — A Retrospection 

F. Lynwood Garrison 33 
Work of the State Geological Surveys. . . .Frank W. DeWolf 35 

Zinc Ores and Metallurgy in 1913 R.G. Hall 37 

Gold and Tin Dredging in 1913 Charles Janin 39 

Recent Changes in Iron and Steel Manufacture 

Bradley Stoughton 41 

Mining Methods and Practice E. H. Leslie 43- 

The Decline of the Rand H. S. Denny 49 

Hydro and Pyro-Metallurgy of Copper in 1913 

Thomas T. Read 54 

Electrometallurgy in 1913 G. A. Roush 61 

Metallurgy of the California Mother Lode 

St. W. von Bernewitz 65 

Progress in Gold and Silver Ore Treatment in 1913 

Alfred James 70' 
Progress in the Application of Compressed Air.UoBert Peele 75 

The Irving Leaching Process L. 8. Austin 77 

Gold-Dredging in Burma 79 

Flotation Processes During 1913 Edward Walker 79 

Mining Litigation— Review and Forecast. .Robert M. Searls 80 

Quicksilver Production and Prices Clifford G. Dennis 81 

Books of the Year 82 

Metal Prices and Markets in 1913 

Special Correspondence from New York 83 

The Metal Markets 86 

The Stock Markets 8S 

Mineral Statistics for 1913— South Dakota, Michigan, New 
Mexico, Alaska, California, United States Coal 88 


■STABLISRCD >i » > Mi imhi 


San Francisco 



.M. YV. von BERNEWITZ i Asaiatani 

Now V.. ik 

THOMAS T. READ Associate Editor 


T a RICKARD Bdltorlal Contributor 

EDWARD WALKER Correspondent 

a. W. Allen, Charles Janln. 

Leonard s. Austin. James F, Kemp. 

Gelasio Caetanl. C. \V. Purlngton. 

Courtenay Ue Kalb. C. F, Tolman, Jr. 

P, Lynwood Garrison. Horace V. Wlncuell. 

Cable Address: Pertusola. Code: Bedford McNeill I 

CHICAGO— 784 Monadnock Bur. Tel.: Harrison 1620 and 636, 
-NEW YORK — 1308-10 Woolworth Bdg. Tel.: Barclay 646$. 
LONDON — The Mining Magazine, Salisbury House, B.C. 
Cable Address: Oligoclase. 


United Slates and Mexico $3 

Canada 14 

Other Countries in Postal Union 21 Shillings or *5 

L. A. GREENE ------ Business Manager 

Entered at San Francisco Postofflce as Second-Class Matter. 



It is the Editor's privilege mice a. .year to write 
directly to his readers, contributors, and advertisers 
a word of thanks for their support, and it is a pleasant 
privilege and a valued one. There is a bond between 
reader and Editor that grows with the years, and in 
the ease of the Minim/ and Scientific Press it is pleasant 
to know that the tie is close. Despite the admittedly 
bad year and the disturbed conditions in Mexico which 
have forced economies in the budgets of many mining 
men, 'stops' have been less than had been anticipated, 
and the total number of paid subscribers to the Press 
has been steadily increasing since April. 

If less immediately profitable than some of its 
predecessors, 1913 has been an unusually interesting 
one to members of the editorial staff. Early in the 
year it was found possible to carry out long-cherished 


January 3. 1H14 

plans for opening an editorial office in New York, and 
Mr. Read, hastily pocking his dictionary and thesaurus, 
N- l't tor the city mi t li «- Hudson, The move has proved 

a wise one in that it lias made possible a marked im- 

prove nt in the paper. To take Mr. Read's place 

iii S;in Francisco, Mr. B. II. Leslie came up from 
.Mexico, where he had been doing excellent work on 
the staff of our interesting southern contemporary, the 
Mexican Minimi Journal. About the same time .Mr. 
Oelasio Caetani joined our staff of Special Contribu- 
tors and began to furnish those delightful essays in 
which sound technical knowledge is so mingled with 
homely common sense, that there have been many calls 
for more. Late in the year Mr. Frederick EL Morley 
came down from the mountains of Colorado to give 

to the readers of the Press from his store of experience 
and observations. 

Attentive readers will have noted the large space 
devoted this year to flotation and copper metallurgy. 

Both subjects have been big with interest, and both 
promise much for the future. It will be the effort of 
the Editors to continue to print the most accurate in- 
formation on these subjects and to give to the Press 
the same peculiar standing on these lines that it al- 
ready enjoys in matters of eyanidation and dredging, 
to mention only two of what may be called Press 

's| ialties.' In this and all our work we shall strive 

to continue to win ami to hold the confidence of read- 
ers, contributors, and advertisers. Service is the key- 
note of success in journalism as in other industries. 
and service has ever been the purpose of the Minimi 
(/a./ Scientific Prqss. 

Gentlemen, on behalf of my associates as well as 
myself, we thank you for your support and wish ynu 
all a happy and prosperous new year. 

H. Fosteb Bain. 
January 1. 1914. 

year to reorganize the farmers for further action 
against the smelters. 

LEAD, nickel, and tin smelting have shown few 
changes in the year, and little of technical im- 
portance has transpired. In the Sudbury district the 
Mond Nickel Company began smelting at its excellent 
new plant, and is experimenting with Dwight-Lloyd 
sintering machines. The Canadian Copper Company 
is achieving excellent success in usin<r powdered coal 
for fuel and in other lines. At the Tooele plant of 
the International Smelting & Refining Company, in 
Utah, a curious accident resulted in an explosion 
which destroyed the dust-chamber. It seems that when 
wet ..r,- high iii sulphur is put through the sintering 
machines, there is a reaction not unlike that which 
is counted on to make the Hall process of fume treat- 
ment ;i success — that is. a part of the sulphur comes 
down uncombined in the solid state. This beiiifr car- 
ried over into the dust-chamber, led to an explosion, 
and has also caused serious loss by tire in tin- bag- 
boiise. At Murray there have been murmurs of dis- 
content ami a renewal of agitation over fume trouble, 
and a determined effort was being made during the 

DIAMONDS form one sort of an index of trade 
conditions, and it is interesting to read in recent 
correspondence from South Africa that slackness is 
chiefly felt in the market for small stones, indicating 
the effect of fluctuating demands of fashion rather 
than a lack of buying power the world over. The 
same correspondent discloses the fact that diamond 
dealers have a jargon all their own. as the following 
Illuminating remarks will show: "Kimberley was 
freely sold this week by the Syndicate. New York 
buying all the closed goods. Wesselton is announced 
to be shown on Monday: applications for sights are 

MANY of our readers may not know of the exist- 
ence of the American Museum of Safety in the 
Engineers' building, which houses the American Insti- 
tute of Mining Engineers, since its publications are 
not numerous and do not reach ;i wide field. The in- 
fluence of the Museum is widespread, however, and we 
recently referred to the First International Congress 
of Safety and Sanitation, held under its auspices. 
Scarcely less important is the First International Ex- 
position of Safety and Sanitation now in progress in 
the Qrand Central Palace. New York. Not only the 

makers of safety appliances have displayed their 

wares, but the large industrial corporations have 
made impressive exhibits of what they are doiny to 
conserve the safety, health, and mental well-being of 
their employees. 

Annual Reviews and Statisticians 

In presenting this number of the Mining and Scien- 
tific Press, a word or two of explanation may be per- 
mitted. The change in the size of the page has been 
made, in part to conform to what is rapidly becom- 
ing the standard size for technical journals, and in 
part to permit a better use of space in connection 
with illustrations. Incidentally, improvements have 
I n made in dress and style, and others are in con- 
templation. It will be noted that in this review much 
less space has been devoted to statistics than has been 
customary, and that there are no summaries of devel- 
opments by states and districts. It is felt that this 
is in line with the general purpose of the Minimi and 
Scientific Press, which is. to print the best technical 
journal of mining. The news of the mines is printed 
week by week. To rehash this for an annual summary 
is a thankless job of doubtful utility. For those far 
countries where periodical reviews are more appropri- 
ate as also more feasible than a steady stream of news 
letters, we shall continue, as in the past, to print gen- 
era] resumes as opportunity serves. In our Special 
Correspondence last week we published such letters 
concerning mining in 1913 in New Zealand am 
Rhodesia, ami we expect to print, when the data art 

hi I l'»14 
(able, another 

• i those excellent general reviews 
..f the progress nf mining in the Belgian Congo, of 
which Mr. S II Ball baa already furnished three. To 
i>. truly valuable, Bttch summaries must be written bj 

the right man. and when the right material has I n 

assembled. To attempt a complete review of the world 
of mining al the end of an artificial period, leads but 

to a drear.! Bea tff words. News of develop at is 

only news when fresh, and from eight to nine pages 
i- -i aside in each weekly issue of the Press for print- 
ing of significant news while ii is news. 

Technological developments take place regardless of 
calendar yean. At times the progress is rapid, again 
it i>. slow. In the year that has just closed, there 
has been intense interest in copper smelting, ami many 
improvements have been made <>r proposed; lead smelt- 
ing has seen few changes. In the following pages; 
therefore, will be found an elaborate review of copper 
smelting, and only a paragraph on lead smelting. Next 

year, possibly, th mditiona will be reversed. This 

illustrates the controlling motive in the selection of 
the material in this, as we believe, our best Review 
Number. Why take ten pages to say that nothing 

As for .statistics, we print those which are available 
and authoritative, and will print more as they become 
available. A little statistical knowledge, however, is 
a dangerous thing, since the fall of Adam there have 
been statisticians in the world, and yet even now 
there is no agreement as to when that interesting event 
transpired. A baby when born weighs perhaps eight 
pounds and at the end of the year possibly three times 
as much. At the same ratio he should weigh a trifle 
less than a ton at the age of five — but he doesn't. 

MINING A\D m II \ i ii |( PR] ss 

for th.' lirst 

Our Contributors 

It is always a pleasure to be in good company, and 
the members of the editorial staff feel especially hon- 
ored by those who have given of time and effort to 
make this number of the Mining and Scientific Press 
interesting and valuable. It is a rare pleasure to 
come into contact with significant men. and it is even 
more of a privilege to have their help. To the sym- 
posium upon the condition and needs of prospecting, 
of which we print a part this week, men of the widest 
experience and of well proved ability have contrib- 
uted. Messrs. W. IT. Aldridge, Philip Argall, F. W. 
Bradley, P. R. Bradley, D. W. Bruntou, Albert Burch, 
George E. Collins, David Fasken. Charles Ilayden. D. 
C. .Tackling. Hennen Jennings, B. B. Lawrence, E. J. 
Longyear, J. H. Mackenzie, IT. C. Perkins, M. L. Arthur Thacher, B. B. Thayer — and these form 
but a part of the list — are men who know ; and what 
such men say may not be disregarded. 

They, and those who have written the special articles 
in this issue, are too well known to require intro- 
duction to mining engineers, but for the benefit of 
the young men. and those to whom the Press comes 

time, we inaj say thai Sir trohibald 
Douglas >s a b„sv attornej in New Fork who still 
Bnds time Co.- public servioe of the tort with which 
ins name is so oloselj associated through th.- actlvi 
ties of I),-, .lames Douglas, of the presidents of the 
thnv great mining engineering societies who write for 

ns. Mr. Rand is also president ,,f ,|,,. Spanish Amci 

'Can Iron Companj ami has bee,, aotive in the develop 
ment of th,- resources of thai island, as be has been 
in Institute affairs through the whole of his notably 

Ml ssl '" 1 year as president; .Mr. Chance, a Philadel 

phis mining engn r widely experien I in the prob- 
lems of coal and iron. was. as much as anyone, the 
founder of the Society of which he writes; Mr. Scholz 
is engineer for. and president of. the various Rock 
Island coal companies, and a man who has given i b 

time and thought to the organization of the bitumin- 
ous coal operators. Mr. Rickard, who reviews the 
whole world of mining from the London viewpoint. 
limls time for the Press despite his duties as editor of 
'/'//-• Mining Magazine. Mr. Burton is mining editor 
of The Annalist in New York, and former New York 
correspondent for the Minim/ and Scientific Press. Mr. 

Garrison is a Philadelphia engineer well known to 

our regular readers as one of our special contributors. 

Mr. De Wolf is director of the state Geological Sur- 
vey of Illinois and secretary of 'the Association of 

State Geologists, of whose work he writes. Mr. Hall 
is a "Tech' man who looks after the interests of the 
United Zinc & Chemical Company and knows the zinc 
business from many angles. Mr. Janin is the worthy 
successor to the great name among mining engineers 
built up by his father, brother, and uncles. .Mr. 
Stoughton is the versatile secretary of the American 
Institute of Mining Engineers, who always does three 
men's work and then finds time to help anyone who 
needs help. Mr. Leslie is assistant editor of the Press. 
Mr. Denny is one of the two famous brothers who 
saw so far and so truly into the future of the Hand 
that they became unpopular then', and more recently 
in Mexico, London, and elsewhere have enjoyed see- 
ing others coming to their own conclusions. Mr. Read 
is New York editor of the Press. Mr. Roush is asso- 
ciate editor of that very excellent journal. Metallurgical 
and Chemical Engineering, and has done us the rare 
favor of contributing generously to a contemporary. 
Mr. von Bemewitz is assistant editor of the Pn'.ix and 
has brought to the study of American problems in 
milling several years' active experience at Waihi ami 
Kalgoorlie. Mr. James is the London metallurgist 
whose worldwide interests keep him especially well 
informed, and whose keen comment always stimulates 
discussion. Mr. Peele is professor of mining at 
Columbia University. Mr. Austin, formerly professor 
of metallurgy at Michigan College of Mines, is now 
in general practice at Salt Lake City. Mr. Walker 
is our London correspondent. Mr. Searls is assistant 
city attorney of San Francisco and obtained his knowl- 
edge of mining law through service in Judge Lindley's 


January 3, 1914 

offici'. .Mr. Dennis is a California milling engineer 
who lias developed and managed quicksilver proper- 
ties in Texas and Nevada. The writer of our New 
York Metal Review is a professional correspondent 
who devotes his whole time to watching the metal 
market but who prefers to remain anonymous. Even 
thjs does not entirely complete the list, since in ar- 
ranging for the papers printed, and in revising and 
criticizing them after submitted, the members of the 
regular staff have had invaluable assistance from many 
other members of the profession. 

The Mexican Crisis 

The past year in Mexico has been one marked by 
political turmoil and general depression and one in 
which the mining industry has suffered keenly. As it 
closed, the situation showed no signs of improvement, 
and the immediate future holds little of promise. The 
Huerta administration, which when inaugurated gave 
promise of a solution of Mexico's difficulties, has de- 
generated into a military despotism. It has been ac- 
cepted by but a small part of the population and its 
orders carry but little weight outside of the Federal 

The period which Mexico is passing through today. 
and the problems and difficulties which confront the 
Mexican people, are those inherent in reconstruction, 
and as it is a long step from Porfirian despotism to 
democracy, those who have interests within the con- 
fines of Mexico can but abide the time when a renais- 
sance of political and social standards will result in 
that longed for peace and stability of government 
without which no country can prosper. With Mexico, 
reconstruction, because of the character and status of 
the population, without outside assistance must be 
necessarily slow. Of the 15,000,000 inhabitants 80 per 
ei -lit are Indians or belong to the peon class; a popula- 
tion which in the past has been herded, driven, and 
exploited by the upper class with which it has no bond 
of sympathy. The peon has had no opportunity to 
acquire property, to better his condition, or to improve 
his surroundings. It is to the peon, who is awakening 
to a realization that he is a part of the nation, that 
the present upheaval is due. It has been estimated 
that in this vast country comprising 767,000 square 
miles, an area equal to 17 Pennsylvanias, all of the 
arable land is held by 7000 families. One single land- 
lord holds 16,000,000 acres, an area one-third the size of 
Gnat Britain, and this has been assessed for taxes at 
$200,000. While a good part of those who are at pres- 
ent bearing arms on the revolutionary side of the 
struggle should be classed Its bandits rather than 
patriots, their present position in the ranks of the 
revolutionists is largely due to an unhealthy political 
atmosphere and its direct results upon their manner of 

The past year has seen the overthrow of Francisco 
Ifadero, a man of undoubtedly high political ideals, 
but one who lacked those attributes of leadership and 

organization which are prerequisite at this time. In 
the usurpation of power by Victoriano Huerta. it was 
hoped that the substitution of a rigorous policy backed 
by the support of the army would restore peace and 
put a quietus upon the disturbing element. This also 
has failed, and the results of another attempt at 
despotism has been revolution, federal bankruptcy, 
brigandage, general depression, and little semblance of 
authority. There are some who hold that with adequate 
funds, Huerta 's policy would succeed, but in the light 
of his conduct of office during the past few months, 
this may be doubted. In fact, the estrangement be- 
tween federal and revolutionary factions has increased 
and the resultant loss of confidence in Huerta by his 
previous supporters and foreign nations, augurs poorly 
for any solution at his hands. Mexico will not again 
submit to a dictatorship like that of ex-President Diaz 
or the present incumbent Huerta, and he who suc- 
eeeds must learn as Porfirio Diaz, realizing his own 
shortcomings, recently stated, "that to govern Mexico, 
there is only one course to take and that is to act for 
the people and through the people." While the be- 
stowal of an effective political franchise upon those 
who are not fitted to receive it is not essential, those 
rudiments of justice and republican government which 
have found so little place in Mexico to date, must re- 
ceive consideration in the solution of the present situa- 
tion. It is to be noted that the two important revolu- 
tionary movements, headed by Madero and Carranza 
have had their origin in the north; in that part of 
Mexico adjacent to the United States where the Mexi- 
can people have had opportunity to see the results of 
true democracy. It may be objected that the restless- 
ness and ignorance of a large percentage of the people 
make the situation hopeless and that the form of gov- 
ernment is of a very secondary importance ; but even 
granting this, there is only hope for peace in a govern- 
ment which has been legally constituted and is identi- 
fied with the majority. Only such a government can 
find favor with and command the respect and support 
of the nations. 

The mining industry in Mexico has had a bad year, 
due largely to the interruption of railway communi- 
cations and disturbed conditions which have made im- 
possible the operation of a large number of the proper- 
ties. Railway communication between the interior and 
the American border was interrupted early in the year 
and attempts to reestablish it have been futile. With 
the fuel oil supply from the Tampico fields intercepted, 
there is little hope of an early resumption of railway 
traffic. The coal supply has also been curtailed by the 
dynamiting of a number of mines by the 'revolution- 
ists' in the state of Coahuila and interruption of rail- 
way communication. 

Most of the larger silver districts, however, have 
kept up and in some cases increased their production. 
Among these may be mentioned El Oro, Pachuca, 
Guanajuato, and Hostotipaquillo. The returns reported 
for the last fiscal year ended in July show the exporta- 
tion of gold to have decreased J*10.313.687 ; and ex- 

.Imiuarv :t, l'U j 


elusive "f ned silver then ».is i decrease in silver 

.->. |>.>rts ,if iimt r*7,»HK).(KHt. Copper has not fared so 

badlj The Cutanea n ■ have been in practical!; 

continuous operation, a* have those at Boleo and Aire 
Libre; the Moetezuma company reporta the beat year 
in its history. The eopper exports for the fiscal year 
totaled ^36,522,115, which is an increase of P3,020,242 
over the preceding year. Lead showed a decrease of 
I'l.lll.Ml ami the rin'c exports have dwindled to 
'i The importance of the petroleum industry is 
increasing us is the output. The production for the 
year was estimated at 3,955,228 tons, an inereaae of 

1,435,218 tons over that of the pr ding year. The 

total investment in the oilfields is now estimated at 
r»700.000,000. Taking oil into account, the value of the 
mineral exports for the year ahowed an increase of 
t'-'>. 441.807. This figure includes the silver coin ex- 
ported, which was valued at l*9.80t>.402. 

The figures presented, while Bhowing B material de- 
cline, are evidence that mining is still being profitably 
conducted regardless of revolutionists and increased 
taxes It is universally regretted that this wonderful 
country, which Cecil Rhodes has called "the treasure 
house of the world," should be so burde 1 with in- 
ternal strife, and it can only be hoped that with the 
coming elections on July 5, a new administration may 
come in which will give birth to a new era of political 
quiet and industrial prosperity. 


Not many years have passed since, following the dis- 
covery of a process by which aluminum can be pro- 
duced from its ore comparatively cheaply, the columns 
of the pseudo-technical journals were filled with arti- 
cles describing aluminum as the metal of the future 
and predicting that, because of its strength as com- 
pared with its weight, it was destined to displace many 
of the metals now in general industrial use. The 
claims made by irresponsible people were so extrava- 
gant and absurd that the general public soon came to 
realize that they could never be attained, and conse- 
quently discounted every statement made concerning 
aluminum. As a result the metal, from enjoying high 
regard, fell almost into disrepute and public interest 
in it declined. But as a matter of fact, the general 
features of the statements first made arc essentially 
correct, minor factors having intervened to prevent 
them from being realized as quickly as expected. 
Though the cost of the metal was greatly fleet-eased. 
it was not reduced to a point where the sum total of 
advantages plus cost was sufficient to cause manufac- 
turers to change their practice, which, in many cases 
would have necessitated 'scrapping' valuable machin- 
ery and abandoning the manufacture of products for 
which a reputation had been built up through many 
years of work. 

Other factors than mere cost must always be con 
sidered. Thus as a conductor for electricity, alumi- 
num at 20 cents per pound is on a par, from the 

s '""'i it of cost, witl pper at 12 to 13 oanti Dur- 
ing 1912 aluminum ranged between 18 and 26 eenta 

I" 1 ' I '"I whil ippcr ranged between 14 mid 17' j. 

in other words, sometimes copper was the cheaper 

and son, .lines aluminum, but the latter showed I 

range of B cents against 8% for the former. The 
manufacturer and consumer of electrical conductors, 

therefore, had oparativelj little incentive t >m< 

mit themselves to the us,- of aluminum, the more so as 
the supply of the metal was comparatively limited and 

a few large purchases might send it Bkyi keting. This 

is ool all the story, however, for aluminum is com 

paratively weak in its tensile strength, while the larger 
cross-section of the equivalent conductor made Un- 
wind load and ice and snow load on wires i h greater 

than is the case with copper. To support the wires 
would require more poles or towers, and what was 
saved at one pocket was lost out of the other. This 
difficulty has now been overcome by the use of a com- 
posite cable of several aluminum wires about a steel 
wire, and the transmission line of the l.os Angeles 
power project uses such a cable for its 275 miles of 
length. There is another difficulty: aluminum, in spite 
of the early claims made for it. is much more subject 
to corrosion than is copper, and the same is true of 
steel. We understand that a means has at last been 
found of overcoming this drawback, and that hence- 
forth the item of relative cost will practically be the 
determining one. Assuming that 14 to 15 cents is the 
normal price for eopper. it seems probable that alumi- 
num will henceforth be a keen competitor with it. 
when selling for 20 cents per pound. 

It must not be assumed from this that increase in 
the output of aluminum will be followed by a corre- 
sponding decrease in the consumption of copper, for 
there is almost an infinite variety of uses for aluminum 
which can absorb much greater stocks of the metal. 
Its use in the manufacture of cooking utensils, com- 
peting with enameled ironware, is known to everyone, 
and the consumption in this way will certainly increase 
greatly when the selling price of the finished article 
is brought closer to the cost of the metal, and the 
latter is also reduced. In this case its use for the 
larger-scale cooking utensils employed by the makers 
of preserved food, liquors, and the various products of 
chemical engineering is also likely to increase. An- 
other large field is in the manufacture of automobiles, 
aeroplanes, and other machinery where lightness com- 
bined with strength is advantageous. A large increase 
in the supply, together with a steady moderate sell- 
ing price is likely to greatly increase consumption in 
this field. Another field, yet unexploited, is the use 
of the metal for interiors, supplanting woodwork. In 
the modern business office almost the only articles still 
made of wood are the desks and chairs, and it is quite 
possible that these will soon be supplanted by metal, 
yielding to the demand for fireproof construction. 
Painted sheet steel is now the favorite material for 
all metal construction, but unpainted aluminum would 
be much more satisfactory from the standpoint of illu- 


January 3, I'M 4 

initiation, since it quickly acquires a gray mat' surface 
which diffuses light without creating a glare. The 
i-ost of aluminum is now too high to compete with 
Bteel in this way, but what the future position of the 
two will lie must In- left for the future to show. 

lluch aluminum is used in ways which are not im- 
pressive liut which consume a large amount of the 
metal. Aluminum novelties' have become so common 
that they have lost their novelty, hut have proved so 
convenient that their use is likely to increase rather 
titan decrease. Aluminum foil is now being used, dis- 
placing, to some degree, the tinfoil so familiar to our 
fathers as the containers for 'fine-cut chewin ' ' and 
to our sons as the wrapper for expensive cigars. The 
powdered metal, known as aluminum bronze powder, 
is used in painting, lithographing, printing, and as a 
constituent of explosives and a patented source of 
heat. The early difficulties in working the metal have 
now been largely overcome, and the manufacture of 
aluminum tubing, for example, is rapidly increasing. 
It is not remarkable, therefore, that the consumption 
in this country increased from 46,000,000 pounds in 
1911 to i;:>.000.000 in 1912, coincidentally with a steady 
increase in the price from 18 cents in January 1012 
to L'ti cents in December. It is important to note, how- 
ever, that even this amount was only ~i l /c of the cop- 
per consumption during the same period. 

No review of the outlook for aluminum would be 

uplete without some reference to the sources of the 

supply of the metal. The Aluminum Industry Akteeu 
Gesellschaft is the largest producer, its plants in Switz- 
erland. Germany, and Austria having a capacity of 
32,000,000 pounds per year. This is closely followed 
by the Aluminum Company of America, with plants 
at Niagara Kails and Massena, New York. The British 
Aluminium Company, with two plants in Scotland.' is 
a good third, and there are numerous other plants in 
France. Germany, Switzerland . Norway, and Italy, 
which contribute to the total output. The Northern 
Aluminium Company at Shawenegan Falls. Canada, is 
the only other plant now producing the metal on the 
North American continent. However, the Southern 
Aluminium Company has under construction near 
Whitney. North Carolina, a plant which will nearly 
donble the present American output when it is in oper- 
ation. The power supply is to be obtained from Yad- 
kin river, and the technical work is under the direc- 
tion of French metallurgists. The Aluminum Com- 
pany of America is also building a new plant at 
Marysville. Tennessee, and is said to have contracted 
for 20.000 electrical horsepower from January 1. How- 
ever, the power company found it necessary to rebuild 
the dam ami these two plants in the south are both 
likely to begin operations toward the end of the year. 
Perhaps the most important effect of this will be to 
give to manufacturers more than one domestic source 
of supply, and manufacturers who have heretofore 
been deterred by this fact from committing themselves 
to the use of a product in which there is now no open 
market will be encouraged to begin or increase their 

use of aluminum The tremendous increase thus ma 1* 
in the domestic output of aluminum is certain to have 
a marked effect on the uses and applications of the 
metal, and it will be interesting to observe whether 
the increased •consumption will take care of the in- 
creased yield, or whether a recession in the price wiH 
be the result. 

Production of Gold In 1913 

Since the days of Jason, the quest of the 'Golden 
Fleece' has absorbed the attention of a large part of 
the people of all countries. On account of its vM 
and value, gold is the metal of paramount importance 
in the world, being now the standard of the monetary 
systems of most of the important nations. From the 
time of the oldest known civilization, it has been re.-. 
Ognized as the most valuable of metals because of 
its color, lustre, and malleability, as well as its rarity. 
The Egyptians and Assyrians held gold in high esteem. 
as is evidenced by the ornaments and jewelry which 
have been found among the relies in the most ancient 
tombs, and it seems quite probable that the early 
Egyptians used gold as a medium of exchange. With 
regard to its production, there appears to be no sta- 
tistics earlier than the time of Solomon, although the 
Egyptian hieroglyphics give the amounts of the trib- 
ute paid to the Pharaohs. We are told that the weight. 
of gold which came annually to Solomon was t>(>(> tal- 
ents, an amount which would be worth today any- 
where from thirteen to twenty-six million dollars, ac- 
cording to different authorities. Evidently the gold 
industry was flourishing as far back as 1000 B.C. and 
the statisticians were already busy. 

Accurate statistics of the world's productii f gold 

are never available, but the annual estimates arc close 
enough for all practical purposes. Exact figures 
of no particular use in any event, for the principal 
value of statistics lies in the indication of general 
tendencies. Last year we noted that the rate of in- 
crease in gold production was steadily declining, and 
this year we find that the rate of increase has not 
only been brought to a halt, but that the total output 
has actually diminished very materially. The table 
showing the world's production of gold for several 
years past is of interest, for it shows the great vari- 
ations in production and the obvious tendency toward 
a gradual diminution. Our estimate for the year 1 ;»1 ■ : 
is based upon official data and accurate figures as far as 
these are obtainable. The figures for Africa and Aus- 
tralia are official for the first ten or eleven months, 
December being estimated, and our data for the 
United States. Canada, and India are based upon esti- 
mates furnished by government officers. The Mexican 
government publishes the figures for the exports of 
gold for thi' fiscal year ending June 30, so th( 
mate of the gold production is based upon incomplete 
data, although this is fairly accurate. 

Official statistics for Russia are seldom published 
until two or three years have elapsed, but the esti- 

Jannarj 3, 1914 


mates furnished bj oar London representative ire 
probably »■< close u can be lecnrsd li will, therefore, 
be observed that fully 90 per eenl of the world's pro 
duetioo .'i gold can I"- eatimated with ■ high degree 
of aeeuraoy, although »• deem it fooliab t" attempt 
la i:i\. anything more than approximate figures. The 
remaining in per eenl is contributed by countries from 
whieh accurate statistics ;ir.- rarely, if ever, available. 
During the year, detailed figures will be published 
bj tin governments of Japan, Korea, and the Eaal 
Indus, but the production of gold from the Central 
ami Smith American countries is only obtainable by 
computing the amounts of the importations into other 
countries during the year. Prom countries such us 
China do reliable >liii;i can I"- procured. The produc- 
tion from 'other countries' includes that from Austria, 
France, Germany, Qreat Britain, Italy, Servia, China, 
the Bast Indies, and many minor producers. The <-sti- 
inatrs given must be regarded as mere approximations, 


1V3 $157,494,000 190S $442,477,000 

1903 .'.'. 327,702, 1909 454,059,000 

1904 347.377.000 1910 465,260, 

1905 S80.288.000 1911 461.542.000 

1906 402.503.0 10 1912 476,000,000* 

1907 412.9B0.OO0 1913 457.92S.000t 

•Partly estimated. tEsilmated. 

The notable increase in gold production during the 

year litll' was due principally to the Transvaal. In 

1913 the production of the Transvaal declined al t 

$6,000,000, while that of Rhodesia and West Africa 
showed slight increases, sn that the total output of 
Africa for the year will he less than that of the pre- 
ceding year by more than $4,000,000 worth of gold. 
This decrease is duo in part to strikes and riots in. 
tin- Transvaal last summer and the great scarcity of 
labor, and also to the fact that the average value of 
the Rand ores is diminishing, as is pointed out by 
-Mr. T. A. Riekard and .Mr. II. S. Denny elsewhere in 
this issue. In the United States there has been a steady 
decline in gold production for some time, and this will 
probably become increasingly noticeable unless some 
new goldneld is discovered within the next few years. 
It is a fact that the richest placers and lodes in the 
country have already been found and exhausted, with 
the result that onr gold production in the future must 
come from the large bodies of low-grade ore. The 
rapidly diminishing production of one mine alone, the 
Goklfield Consolidated, accounts in a large measure 
for this decreased gold production of the country, but 
there have also been important declines in other fields. 
Alaska, for instance, shows a decrease of about $1,700,- 
000. which is largely due to the exhaustion of the 
bonanza gravels of the Fairbanks districts, and to an 
unusually dry season. 

Mexico's condition of unrest and revolution has 
caused the suspension of mining in many districts in 
that country, with a corresponding decrease in the 
gold ontput. although in the larger camps work has 
been continued with only slight interruption. The ap- 

bing exhaustion ol - ,,t the principal ore 

bodies is already having its effect, while the cessation 

"' i-'-osp. ••' "■■■■ on set nl of the disturbed oondition 

"' ""• "»trj augurs ill for the future gold supply, 

India is one of the fen intries whieh shows a steady 

1,11,1 ' sistenl increase m k ,,,i,| production. 

1911, [913 

Ul " a 1187,788, 1208,796, 1204,3 

1 "''"' s '"" 98,890, 98,461, 88.J91.000 

Australasia 69 101 , 

Russia 82,161,000 27,702,000 26, 

Mexico 24.880.000 24,760, ni.000 

lmli -' 10,449,01111 12.0SS, 12.1J 

South America 12,840,1 11,600, 12,0n". 

Canada 9,702,000 12,1 ,000 iO, 

Japan and Korea 6,890,000 7, ,. 

East Indies 4,726,000 4,980,000 5.0no. 

Central America 3,360,000 3,600,000 3,600,000 

Other countries 13,249,000 l",.i>77 16,000,000 

Totals $461,542,000 $475,000,000 $457,92V 

During 1!I14 and the years to come, the production 
"i' gold will probably decrease gradually, unless oew 

goldfields of importance are discovered. Improve- 
ments in metallurgy will undoubtedly continue to be 
made, permitting of the working of lower-grade ores, 
but this science has already advanced so far that future 
betterments will probably make progress slowly. Much 
may be expected, however, from the successful mining 
and milling of the huge bodies of low-grade ore which 
are known to exist. The operation of the Alaska- 
Treadwell and the experiments conducted by the 
Alaska (Jastineau and Alaska Juneau companies have 
proved that ore containing $1.50 to $2 per ton in gold 
can yield a profit where extensive deposits are mined 
on a huge scale. By the end of this year the last 
two companies mentioned should be recovering about 
$5,000,000 worth of gold annually, and this produc- 
tion will in time be doubled. Increased transportation 
facilities will greatly aid mining of the lower-grade 
gold gravels and the vein deposits in the difficultly 
accessible regions of Alaska. The same is true of 
Siberia, where vast areas of alluvial deposits lie un- 
developed on account of lack of transportation. The 
consensus of opinion is that the more accessible parts 
of the world have been so thoroughly prospected that 
there is now slight probability of discovering gold- 
fields of richness or importance in the regions which 
are now known. In the future the prospector will 
be forced to confine his efforts largely to parts of 
Canada and Alaska, South America, China, and else- 
where, for it is evidently a fact that almost all of 
the easily mined placer deposits and the outcropping 
bodies of rich ore have been found, mined, and largely 
exhausted. The discovery of new fields will depend 
upon the exploration of distant inaccessible territory, 
and upon scientific prospecting by means of our vastly 
increased knowledge of the geology of ore deposits. 
The mining and treatment of large bodies of low-grade 
ore will also add greatly to the future production. 


January 3, 1914 

Gold and Silver Production of the United States 

Estimates for the calendar year of 1913, 
Survey, with final figures for 1912: printed 

State or territory. 1912. 

Alabama $ iu.724 

Alaska 17.145.951 

Arizona 3,762.210 

California 19,713,478 

Colorado 18.58S.562 

Georgia 14,360 

Idaho 1,381.214 




Montana 3,625,235 

Nevada 13,456,180 

New Mexico 784,446 

North Carolina 166.014 

Oregon 770.041 

•Philippines 400.248 

•Porto Rico 

South Carolina 16.915 

South Dakota 7.891.370 

Tennessee 8,265 

Texas 63 

Utah 4.265,851 

Virginia 218 

Washington 680.964 

Wyoming 22.235 

Totals J93.451.500 

•Estimates. 1912. 

by the 

th rou 'j 


$ 8, 







Bureau of the Mint and the United States 
h the courtesy of George E. Roberts, Director 
















Silver (Fine Ounces) 

State or territory. 1912. 

Alabama igg 

Alaska 515,186 

Arizona 3,490,387 

California 1.300,136 

Colorado 8,212,070 

Georgia 77 

Idaho 8,294,745 

Illinois 4.731 

Michigan 528,453 

Missouri 35,438 

Montana 12,731,638 

Nevada 14,369,063 

New Mexico 1,536,701 

North Carolina 4,854 

Oregon 57,081 

•Philippines 5,650 

•Porto Rico 100 

South Carolina 47 

South Dakota 206,460 

Tennessee 89,893 

Texas 406,067 

t'tah 13,835,903 

Virginia 982 

Washington 413,538 

Wyoming 265 

( leological 
of the Mint. 




























Totals 63,766.800 


United States Mineral Output in 

Below ar,- given figures of production for 1912. as 
collected by the United states Geological Survey, and 
estimates for 1913, for coal and the leading metals, fur- 
nished by the courtesy of George Otis Smith. Director, 
except as noted. 
Coal: 1912. 1913. 

Bitumi is, short tons. 450,104,982 476,000,000° 

Anthracite, long tons.. 75,322,855 79,800,000* 

Pig iron, long tons 30,180,969 30,500,000} 

(o,, |„-r. pounds 1,243,268,720 1,223,700,000* 

Gold, fine ounces 4,520,717 4,276,300; 

Silver, tin,- ounces 63,766,800 67,601,lllv 

Lead, shorl ions 415,395 466,843- 

Spelter, short tons 323.907 345,575* 

Quicksilver, flasks 25,064 23,000' 

•U. S. Geological Survey estimates. 
I'. S. Geological Survey and Bureau of Mint estimates. 

Xlron Age figures for 11 months: December estimated. 

fBstimated by C. G. Dennis. 

Copper production in the United States in 1913 is 
estimated by the United States Geological Survey as 
totaling 1,223,700,000 lb., worth $187,200,000. These 
figures may be compared with 1,243,268,720 lb. in 1912. 
worth $205,139,338. 

Lead production is estimated by the United States 
Geological Survey as follows: 

Total refined lead from domestic and foreign ores, 
466,843 tons, value $41,082,184; the corresponding pro- 
duction for 1912 was 467,342 tons. 

Anlimmiial lead, 1913. 16,338 tons; 1912, 13,552. 

Imports (ore. bullion, and refined lead), 1913. 56.717; 
1912, 83.560 tons. 

Lead content of the ores mined in 1913. 460.512 tons; 

1912. 457.355. 

Spelter production is estimated by the United States 
Geological Survey as having amounted to 345,575 tons 
of primary spelter from foreign and domestic ores in 

1913. worth $3!). 395. 550. The corresponding figures for 

1912 were 323.907 tons. $44,699,166. The recoverable 
zinc content of ores mined in the United States in 

1913 is placed at 414.151 tons. 

Canadian Gold and Silver Production 

'Canadian gold production in 1913 is estimated by 
the Mines Branch of the Department of Mines of Can- 
ada at $15,350,000. as compared with $12,559,443 in 
1912. Silver production is similarly estimated at 
33,500,000 iiz.. which may be compared with 31.931,710 
11, 1912. * 

•Printed through the courtesy of R. W. Brock and John Mc- 

.Imiuiirx ;. l'»l 1 


What is the Matter With Prospecting? 


1 la \ mi; in mind the statement often made thai mini's 

are nol being Found as rapidlj as is m saary in 

order t<> keep op the growing rate of mineral produc 
tion in short, thai a few yean "ill bring us face to 

faee with a metal famine and the other wid >m 

plaint thai pros) ton can do longer obtain grub- 

stakes for finding and developing new deposits, nor 

ran thej s.ll claims undeveloped, we n tly asked a 

number of prominent engineers and mine owners to 
aid ns in getting at the facts by answering briefly the 
following questions : 

/. Is it true that money is no longer available in adequate 

amounts for finding and developing prospectst 
i. Ilou ran additional money be marie available? 

Dq y<>u heHeve in government aid to prospecting and pros- 

pectors. and, if so, in what tcay should this aid be given? 
',. Can prospecting methods or conditions be so improved as 

to make the available funds adequate? 
■"■. Hoic can a better market for undeveloped mineral lands 

be created? 

The response has heen most generous, and from the 
large number of interesting letters received we have 
selected a few from which brief abstracts are pre- 
sented below. We regret that the necessity lor con- 
densation makes necessary the omitting of introduc- 
tory statements and reparagraphing, but we feel sure 
that our friends and readers will pardon this in view 
of the significance of the subject-matter. Our own 
summary and comment will be withheld until more of 
the letters shall have been presented. — EDITOR. 

Walter H. Aldridge:--Tlicre is plenty of mi y 

available for investigating new properties which give 
promise of large tonnages of low-grade commercial ore. 
There are not many large concerns willing to grub- 
Stake prospectors or. in fact, to risk much money in 
attempting to develop prospects. The developing of 
thi' prospect is more the province of the prospector 
and his associates or small local syndicates. The rea- 
son that a large amount of money is not available for 
prospects is probably due to the fact that the many 
companies which have had large ami varied experi- 
ences in exploration work have found the chances of 

developing good mines from the ordinary prospect arc 
not sufficiently good to justify the many losses in- 
curred in working prospects which do not develop into 
mines. I do not believe in government aid to pros- 
pecting or prospectors, as I doubt whether it would 
do any good, and there would unquestionably be an 
immense amount of money wasted if such a plan 
should be adopted. I do not know how present pros- 
pecting methods can be materially improved. The 
Western prospector will still continue to hunt up good 
surface showings. If he is successful he will usually 
interest some of his associates in his claim or claims. 

■ ■r else gel a small local syndicate to back him to a 

limited extent. If this work is encouraging, the 
small syndicate usually interests a larger syndicate 
of greater means. Ample Funds can. therefore, be se 

.■lire, I so Ion- as the prospecl in tin- first instance is 

a reasonably good one. and the work subsequently 

performed gives justification for the first g 1 impres- 
sions formed by tin- prospector. 1 can not make anj 
suggestions bow a better market for undeveloped min- 
eral I Is can I reated. as the market ability of min- 
eral lands is entirely dependent upon the surface show- 
ings, geological conditions, etc.. and where these are 
favorable there is always keen competition to secure 

Philip Argall: — In reply to your letter of December 
.">: I find it extremely difficult to interest capitalists 
in prospects. It is very difficult to find a means. The 
Denver Chamber of Commerce organized a prospect- 
ing company last year, and with all the influence of 
that commercial body, backed by competent mining 
engineers and a first-class directorate of leading busi- 
ness men, capital was not available, the e pany had 

to be liquidated, and money returned in full to sub- 
scribers. Clean business methods were the ideals of 
the company, and after the great innings of the wild- 
catters. I now believe the change was too great. 
Though I regret to say it, visions of high profits are 
necessary to sell prospecting stock, hence those that 
"see visions" have their place in mining. I have 
never known successful issues along the line of gov- 
ernment aid. Prospecting combines at once the great- 
est risks with the greatest profits usually obtained in 
mining. I am frank to say that it is only the Gov- 
ernment clerks in the Pores! Service that can at once 
determine if the budding prospecl will develop into 

a great mine or an expensive hole ill the coppice. 
Those who have spent many years in developing mines 
are not dissatisfied with one good mine from ten se- 
lected prospects. It is a matter of judgment and 
judgments aided by experience. By forming prospect- 
ing syndicates to deal systematically with selected 
prospects, and by prospectors being more liberal in 
their terms, giving an interest in the property against 
development and not demanding payment for the priv- 
ilege of developing more or less meritorious uncertain- 
tics, the market may be broadened. 

F. W. Bradley: — Money is just as mailable in ade- 
quate amounts for finding and developing prospects 

as it ever has been. The prospects may not make as 
many bonanza mines as formerly, but the develop- 
ment of less wasteful methods and inventive genius 

will probably keep pi wilb the world's growing 

metal requirements. Additional money could be made 



January 3. 1914 

available by having the postoffioe and oilier authori- 
ties go after the big people in the mining stuck swin- 
dling name as hard as they go after the small people 

who sell mining stocks on false representations. No. 
I do not believe in government aid as a subsidy to 
th< prospectors; but I do believe in the present exist- 
ing government aid to prospecting, which present aid 

will probably continue to grow in the same ratio as 

present government aid to agriculture grows. Avail- 
able funds are just as adequate for all legitimate min- 
ing work as they are adequate for any other kind 
of legitimate, work. A better market for undevel- 
oped mineral lands could be created by stopping the 
swindling names conducted in the name of mining. 

P. E. Bradley: — 1 think money seeking legitimate 
mining ventures exceeds the opportunities to risk it 
where there is a reasonable mining chance tor success. 
Additional funds can be made available by protecting 
the timid operator against fraud. More publicity 
should be given to the possibilities in favorable areas. 
For example, a large English operator recently had 
trouble in securing data on the output of the Mother 
Lode area in this state. His idea was that with this 
data in hand he would have less difficulty in interest- 
ing his friends in that territory. 1 believe in govern- 
ment aid to prospectors only indirectly; that is. by 
stimulating and assisting the mining industry through 
the Bureau of .Mines so that there will he a broader 
field of work for the prospector. Improvement in pros- 
pecting conditions might be brought about by the as- 
sistance of the Bureau of Mines, say by tin- establish- 
ment of district offices, each in the charge of a com- 
petent officer whose duty is to study his district with 
a view to encouraging not only the development of 
new properties, but also the rehabilitation of old mines 
where modern practice and new methods may result 
in their success. A better market can be made by 
protecting the investor against fraud, and by giving 
ample publicity to new methods and the demand for 
minerals not now commonly mined, but which from 
time to time are sought by new industries. 

D. W. Brunton: — It is only too true that prospec- 
tors do not now receive the same backing and support 
from business men that they did ten years ago. In 
Colorado, this is due principally to the fact that no 
new mining districts of any importance have been 
discovered during the past twenty years. Nearly 
every winter, when the snow is deep and the moun- 
tains inaccessible, fairy stories of important discov- 
eries appear in the newspapers, but the next spring, 
as soon as the districts are accessible, the values van- 
ish. Funds and support can only be obtained by 
making mining more profitable and by preventing the 
organization of wild-eat promotions and other fraudu- 
lent methods of imposing on the public, through which 
legitimate enterprises are made to suffer. If. by gov- 
ernment aid. you mean the subsidizing of prospecting 
and mining operations, I would say no. as we have 
altogether too much paternalism now. The F. S. Geo- 

logical Survey and the Bureau. of Mines are now doing 
much more for the industry than any direct grant of 
funds, and if the appropriations for these two branches 
could be increased, there is no doubt the industry 
would be immensely benefited thereby. Improvements 
in prospecting methods. can only be brought about by 
greater knowledge and skill on the part of the pro* 
[lectors. Where prospecting has to be carried on in 
the forest reserves, more common sense and less 'red 
tape' on the part of the forestry officials would be 
extremely desirable and decidedly beneficial, not only 
to the prospectors, but to the forest service as well. 
An undeveloped prospect is a good deal like a lot- 
tery ticket, and. like the latter, will not be a very 
desirable acquisition unless the prizes are not only 
large but sufficiently numerous to justify the risk. To 
this end the complete revision of our present mining 
laws is extremely desirable, so that, should a man he 
lucky enough to open a valuable orebody, he would 
have a reasonable chance of retaining its ownership. 
Albert Burch: — I do not believe in government aid 
to prospectors, but I do believe that the United States 
should take steps to scientifically prospect and clas- 
sify its own mineral lands: and. in doing so. should 
employ the services of both technically trained geolo- 
gists and mineralogists and practically trained pros- 
pectors, on such a basis of compensation as would 
attract the best men of both classes to the service. I 
know of a prospecting venture about to he started, in 
which two men. one of them a good mineralogist and 
the other a veteran prospector, are to start out as 
partners, under a grubstake agreement with a capi- 
talist. If young school of mines graduates, with a 
little mining experience and a fair amount of train- 
ing in field geology, would seek alliances such as 
this, instead of positions as assayers. surveyors, and 
assistants around operating mines, the standard of 
prospecting efficiency would undoubtedly be raised. 
and the demand for competent prospectors increased. 
A young man of this class, with few family responsi- 
bilities, could well afford to devote a few years to this 
kind of work; because, even though not financially 
successful, the experience would be very valuable to 
him in his subsequent mining work. Not the least 
valuable of the lessons which such a life would teach 
him. would be self-reliance. 

George E. Collins: — I have no recent personal ex- 
perience of raising money for prospects, but from 
what I hear. I am satisfied that it has become very 
difficult, excepting from individuals who have excep- 
tional personal confidence in the man who endeavors 
to raise it. I do not know of any way in which this 
condition can be changed, excepting as a result of 
increased public confidence in the business of mining; 
and this, in my opinion, can only he secured by in- 
creased dependence in professional mining engineers. 
based on a higher standard of principle and honor 
among them, and enforced by legislation requiring 
their employment. I do not believe that direct gov- 

January .;. 19] ) 

MINING AND S< II N III |. I'Kl .s.s 


• riuii.iit in. i !,, prospectors is practicable or desir- 
able, exempting aa to il>. rlif niiiiitinii of information 
Hut 1 believe there mighl wisel] be ■ system <>f pub 
lie moae) rewards to proapeetora who discover min- 
eral deposits of substantial value, but whiob under 
existing eonditiona oannol be profitably worked. I 
venture to roggeal thai the federal government, act- 
ing through the Hunan of Mines, mighl purchase 
nim'Ii diacoverica from proapeetora. Prospecting meth- 
oda "ill always depend on the individual proapeator. 
Until something is found, and Borne prima faeU evi- 
(I. hit is secured of the presence of valuable min- 
erals, I fear that organisation and technical skill are 
helpless, and thai we must depend for the original 
discover] of mining prospects on rather haphazard 
nut huils. Thr only way I ran see in which to help 
the prospector is through the technical and semi- 
technica] journals, which can disseminate accurate 
knowledge about minerals, and the eonditiona under 
whirh they are likely to be found, so as eventually 
tu reach the class from which prospectors are drawn. 
Speaking generally, the rool of the trouble, in my 
opinion, is a decadence of the adventurous pioneer 
spirit. Prospectors are fewer than they were, in 
many other lines besides mining. 1 do not hear of 
experienced prospectors of good character being un- 
able to aeenre grubstakes. 

D. Fasken:— I can only s| eak from experience of 
the province of Ontario, ami reliable prospectors have 
no difficulty in finding parties ready to grubstake 
them, but the capitalists are more careful than they 
were a few years ago as to whom they shall employ. 

There is a scarcity of men who should go out as 

prospectors. They have not the technical knowledge. 

Fanners' suns and all sorts of laborers have gone out 
without any idea when they are examining rock as 

to whether they could expect mineral to be found 
or not. With regard to raising money for develop- 
ing purposes. I would say that money in Ontario at 
the present time is scarce, but where a property has 
merit there are plenty of people prepared to under- 
take the development. I do not believe in a gov- 
ernment aiding prospecting or prospectors. I would 
not think such a scheme feasible. I think what a 
government ought to do. and what they are trying 
to do in Ontario, is to protect a prospector once he 
has made a discovery, and let him operate as cheaply 
as possible. 

Charles Hayden: — Money is just as available now 
as it has been in the past, if not more so. It is not 
the place of a banking house, however, to go into 
the business of prospecting — that is the business of 
individuals. I see no necessity for additional money 
being made available. I do not believe in govern- 
ment aid to prospecting and prospectors, other than 
the rights and protection which they now have. I 
do not see in what way prospecting methods can be 
improved. I do not believe there shoidd be any bet- 
ter market for undeveloped mineral lands created. I 

think by good hard «,.rk and labor people should 

develop thus,- privatelj before asking outsiders t.. be- 
come interested in them. 

D. C. Jackling: in mj opinion the apparent lack 

"f interest in prospecting is due more t.. the lack of 
fertile tiebls for such exploratory w,,rk than to in, hi 

l '"' 1 " 'lie part of anybody !•> the discovery of 

new mineral deposits. In other words, the mineral 
bearing areas of the United Stales have been pretty 
well covered bj investigations and developments to 

varying extent. There is scarcely an ana anywhere 
i" tl untry that has iii. I been investigated by en- 
gineers either for the Government or through the ac- 
tivities of private individuals or corporations, and. 
furthermore, the business of mining has taken mi in 
the last few years much more of a scientific character 
than applied to it in earlier days. In fad. ii is 

1,1 mill"; a business conducted in a general way. at 

least, along lines of fairly definite principles, whereas 
in the days of active prospecting in unexplored areas 
the general idea of mining investigations and oper- 
ations partook in some degree at least of the spirit 
of adventure. I believe there is just as much money 
available as there ever was for the investigation ami 
development of mineral resources; but. on the other 
hand. I believe the days of the old time pros] I Mi- 
an- gone and with them the time when money can 
be secured as it used to be for the support of pros- 
pecting expeditions. The modern way is to send an 
engineer to places that are reported through vari- 
ous channels to indicate promise of mineral deposits. 
Instead of the prospector spending months traveling 
by wagon or afoot, the engineer goes to a point near, 
bis destination by train, and in all probability travels 
the balance of the distance by automobile, and if 
the indications justify it. he reports in a definite wax. 
and the result is development on a practical scale: 
the whole thing requiring weeks or months where it 
used to require months or years. On the whole. I 
think, however noble the prospector's vocation, the 
time is past when it can be either a popular or profit- 
able one; and still I believe that, taking into con- 
sideration the possibility of finding new mineralized 
areas, or new deposits in known mineralized areas, 
the development and commercialization of the country's 
resources is going ahead at a more rapid rate today 
than it ever has at any previous time. There are vari- 
ations in this activity, of course, depending on in- 
dustrial conditions, the price of rnetals, etc.: but con- 
sidering periods of time long enough to cover such 
variations from maximum to minimum, I believe what 
I have said is true, and I think the statistics and his- 
tory of the mining industry in the United States for 
the last five to ten years will substantially bear out 
this view. 

Hennen Jennings: — As I have been so little con- 
nected with actual mining in this country of late years. 
I do not care to go on record in attempt to. in de- 
tail, answer your questions. I do not think it ad- 



January 3, 1014 

visable to invoke any government aid unless it might 
be in connection with pushing and upholding the re- 
port of the committee on general revision of the min- 
ing laws of the American Mining Congress. It would 
seem that our stupid apex law. which was supposed 
in lie sii beneficial to the prospector and the poor man, 
has really been a boomerang and struck back at them, 
for now people with money arc fearful in the initial 
sta^c of a mining venture that they may be buying 
lawsuits rather than ore deposits, and they would pre- 
fer paying more money at a later date when the ven- 
ture had its legal and prospect values better estab- 
lished. The busy and greedy promoter has also over- 
done things and has had a tendency to frighten hon- 
est investors away. At the present time only laws 
upholding the poor man and discouraging the rich 
seem in favor with our legislators, and in the end 
most of them will be found to serve the poor man 
about as well as the apex and be a detriment rather 
than a betterment to him. 

Benj. B. Lawrence: — The opportunities offered to 
the prospector in the early days of the development 
of this country no longer exist, (liven new territory. 
\oii will have plenty of prospectors. The decrease in 
the production of the minerals in the state of Colo- 
rado, for instance. I believe to be due to the very 
rapid exhaustion of the mineral deposits heretofore 
discovered in that state, and the failure to replace the 
worked-out mines by new ones is simply due to the 
tact that such mines are no longer easy to find. The 
citizens of Colorado made an effort through one of 
the newspapers in Denver to stimulate prospecting 
and by various measures through the ( 'handier of Com- 
merce there, but as far as I know, the inducements 
which were offered to prospectors to get busy' have 
been productive of no results. I believe that there 
is money available for finding and developing pros- 
pects, and that there are men to find them, the diffi- 
culty being that the prospects are bard to find. 1 
do not believe in government aid to prospecting or 
prospectors. I do not think it would accomplish any- 
thing, and it would help to develop a very substantial 
breed of loafers. The prospector was a product of 
his environment and cannot be reproduced, as exist- 
in'j conditions will not develop the type of man who 
has been responsible for the discovery of the mineral 
wealth of this country. That scientific methods of 
prospecting by expert geologists will ultimately be 
productive of some good. I do not doubt. In this re- 
spect, economic geology has taken great strides, and 
1 am hopeful that as a result of the study of geol- 
ogists some new mineral deposits will be discovered. 
Capita] will be eager to develop mineral deposits if 
they really hare promise. The trouble is that the un- 
developed mineral lands of which we have knowledge 
are rejections from which have been chosen the prop- 
erties which are operating and have been operated in 
the past, and what remains, under existing conditions 
are not sufficiently attractive to allure capital. 

E. J. Longyear: — It is a fact that moneyed men 
are not as ready to back the prospector as they were 
in the past. Additional money may be made avail- 
able by reestablishing public confidence and a reason- 
able attitude of the government toward mineral de- 
velopment. The government, through its Geological 
Survey, can be of great assistance to the prospector. 
I do not favor direct financial aid by the government. 
There is undoubtedly room for improvement in pros- 
pecting methods, but I would not expect such improve- 
ment to have much influence in making money more 
available until other conditions have changed. There 
is a strong feeling among the people today that no 
individual or group of individuals should expect to 
derive from a business venture any more profit than 
a moderate percentage on his investment. This senti- 
ment is being more or less reflected in recent govern- 
ment actions, and investors hesitate to risk spending 
money where there is an uncertainty as to whether 
they are going to be permitted to retain the results 
of their investments. The inducement that leads the 
prospector to endure the hardship of the desert, and 
the capitalist to back him. is the possibility of 'strik- 
ing it rich.' If they can be assured that their prop- 
erty will not be confiscated, even though the profits 
may be large, we shall see plenty of money available 
for developing mineral lands. 

John H. Mackenzie:— My judgment is that there is 
plenty of money still available for developing good 

prospects, but l: 1 prospects are very difficult to find. 

as there is little territory that has not been 'combed' 
over in the last ten years. Whenever a new find is 
made that is really good, there will be plenty of addi- 
tional money spent in searching for new mines. You 
remember the boom in prospecting when Tonopah and 
(loldtield were struck. You also probably know that 
not over 1(17, of the money that was poured into Nev- 
ada for prospecting and developing purposes went 
into the ground and that 00% was spent in gambling 
and riotous living. I do not believe in government 
aid to the prospector, as I do not think it would be 
possible to bring the prospector under proper control. 
As a rule, they are an irresponsible lot. It might be 
that after a prospector found an outcropping that 
promised well, government aiil could be furnished to 
develop the prospect: but. on the other hand, if a 
prospector found a really good looking outcrop, there 
is plenty of private capital available to help him de- 
velop it. I think there is a good market now for un- 
developed mineral lands that promise well — the trouble 
is to find the promising mineral land. 

H. C. Perkins: — It is not true that money is no 
longer available in adequate amounts for finding and 
developing prospects. I do not believe in government 
aid except by making titles secure and preventing min- 
ing swindles. There are ample funds for clean, hon- 
est business. In some localities where dishonest or 
foolish mining promoters have cost the puhlic heavily, 
confidence must be reestablished. 

January 3, 1914 


l : 

M. L. Requa: It ja not true that monej is no longer 
available for developing proapeota. Probabl] at no 

time in tin- hiatory of mining baa there l n ■ keener 

competition for meritorious proapeeta to develop. The 
greal trouble ia the tank of satisfactory proapeeta I 
think it iv highly probable that then- is greater diffi- 
oolty being ezperienoed now than ever in finding grab- 
■taken, fur the reaaon that azperienoe baa proved thai 
it is vorj diffieull in theae days for the ordinary pros 
peetor to find something sticking out of tin- ground 
I think it has become more and more evidenl thai 
the iniiH-s of the future must largely be developed in 
territory thai shows certain geological conditions, bul 
where ore shouts are nol outcropping upon the sur- 
face. The percentage of successes will probably be 
relatively small. I do not believe in government aid 
to prospecting or prospectors, [f the government is 
going into the business, it had better do the whole 
thing 1 — the prospecting and the developing) — and reap 
the rewards. Prospecting methods and conditions do 
not need improvement. It resolves itself into two greal 
divisions: prospecting in the effort to find something 
that is sticking out of the ground, and prospecting 
iu the effort to find an orebody that in indicated by 
certain surface conditions. Xo great improvement is 
demanded in prospecting for deposits that show upon 
the surface; possibly there may he improvements for 
prospecting for hidden deposits. There is an ample 
and voracious market awaiting the development of 
mineral lands that show any value. Boiled down to 
a few words, the facts are that so far as the United 
States is concerned, the surface showings have been 
pretty well found, at least I believe they have. In 
the future, development work must be done with the 
hope of finding orebodies that do not crop on the 
surface. This is expensive and probably will not be 
a popular form of mining and will be done only by 
a few concerns. In the meantime, the prospector must 
seek other fields. I believe that there are still many 
areas in the world that afford the possibility of find- 
ing orebodies showing upon the surface, but I doubt 
that they exist in any great quantity in the United 

Arthur Thacher: — There is one point to which I 
would strongly object, and that is any government aid 
in prospecting or to prospectors. There are a great 
many reasons why I think this would be very undesir- 
able. The whole matter, in fact, had best be left to 
private enterprise. The government can do as it has 
done in the past; that is, give information and maps, 
and possibly this branch might be improved or added 
to, but as for direct aid or undertaking any direct 
help for prospecting, I think this would be a decided 
mistake. I know some others might have a different 
view, but I think the danger in all our government 
work is that they do not draw the line carefully 
enough between what is properly government work 
and what should be left for individual effort. A great 
deal can be done by the government in general direc- 

tions, hut when it encroaches on the private enter 

iris.s I think it is a decided mistake mid will I 
disaster ,,ii,i throw discredit ,,n ail the government 

Benjamin B. Thayer: I do nol agree with what you 
state seems to be a prevailing opinion, namely, "thai 

mines are not being t id as rapidlj as is , 

in oiilcr to keep up the growing rate of mineral pro. 

duction"; or. "thai a few years will bring us ft to 

face with a metal famine." It is my opinion thai 
the old type of prospector is becoming somewhal 
tinct; I mean by this the individual who wenl into 
the mountains alone with his pack-animals, his ex- 
penses being generally borne bj one or two individu- 
als. In addition to this, the possible prospecting area 
has become more and more limited, as many sections 

of the United States have I n pretty well run over. 

The best evidence that prospecting is still going on 
is in the discoveries in Alaska, when', in my opinion. 

up to the present time, on i unt of the ina ssi- 

bility of the country ami the difficulty of transporting 

Supplies for extensive mining, nearly all of the atten- 
tion of the prospector has been given to placer min- 
ing and not to quart/, mining at all points beyond the 
tidewater districts. I think that as this country is 
opened up — by this I mean transportation made more 
feasible — more attention will be paid to the quartz 
deposits of Alaska, and that doubtless many impor- 
tant mines will be opened up. Again. I think the 
prospector of today is too prone to place his holdings 
in the hands of the 'get-rich-quick' promoter instead 
of relying upon the miner to take the metals out of 
the ground — a slower but surer process. I do not think 
it a practicable scheme for the government to at- 
tempt to aid the prospectors financially, but I do 
think the spirit of conservation can be overdone, and 
the government, by the withdrawal of lands, can seri- 
ously hamper the work of the prospector and retard 
the growth of a district. There is plenty of market 
at the present time for promising prospects, if. as I 
have stated before, the prospector will endeavor to 
reach the capital he needs through the proper chan- 
nels. It must be borne in mind that the greatest in- 
crease in the copper-metal output in this country of 
late years has been due to the application of new re- 
duction methods to properties whose existence in some 
instances had been known for over a quarter of a cen- 
tury, and also to the refinement of methods previ- 
ously in use. To sum the matter up. I would state 
that in my judgment there is no dearth of market 
for the wares of the prospector, and many mining men 
of authority still believe that "it is cheaper and safer 
to buy your eggs and hatch them, than it is to buy 
full-grown hens." 

Accidents in metal mines of the United States, ac- 
cording to the Bureau of Mines, in 1912 resulted in 
the death of 661 men. In addition 4502 were seriously 
and 26.232 slightly injured out of 169,199 employed. 



•Januarv -i. 1!H4 

The International Engineering Congress 

Bv H. Foster Bai\ 

Among the import an1 events now being planned for 
i -xt year, the Engineering Congress which is to as- 
semble in San Francisco, September '20. 1915, easily 
takes front rank. Held under the patronage of the five 
national societies, the A rican Society of Civil En- 
gineers. American Institute of Mining Engineers, 
American Society of Mechanical Engineers, American 
Institute of Electrical Engineers, and the Society of 
Naval Architects and .Marine Engineers, and with a 

total guarantee fund of $37,500, the Congress is al- 
ready assured of success. Membership is open to any- 
one upon payment of a small fee, and it is hoped that 
the total enrollment will at least approximate 10.Q00. 
More than 70 engineering societies in America and 

abroad have signified their acceptance of the invita- 
tion to take part. While anyone may belong and may 
obtain such volumes of the proceedings as he may 
care to pay for. participation in the program will be 
by invitation only. 

The Congress is under the management of a hoard 
consisting of 28 representatives of the five Societies 
named. The president and secretary of each society 
is ix officio among the number, and the ten so selected 
constitute the 'Committee on Participation' which lias 
its headquarters in New York. It is through this 
Committee that all invitations to take part in the Con- 
gress arc issued, ami it is to this committee that Col- 
onel George W. Goethals has signified his acceptance 
of the presidency. Active direction of affairs is in 
the hands of a Board of .Management composed of 

is representatives of the five societies, resident in 

San Francisco, anil of which W. F. Durand. of Stan- 
ford University, a delegate from the Society of Me- 
chanical Engineers, is chairman, and W. A. Cattell. 

of the Society of Civil Engineers, is secretary: The 
representatives of the Institute of Mining Engineers 
are Edward II. Benjamin. Newton Cleaveland. W. S. 
Noyes. and II. Foster Bain. The hoard holds nionthU 
meetings and acts through an executive committee and 
subcommittees on finance, papers, publicity, and local 
affairs. The latter will have charge of quarters, trans- 
portation, entertainments, and excursions. Mr. Benja- 
min, its chairman, is at the same time a member of 
the executive committee. 

The papers committee has been busy outlining a 
program and tentatively making up lists of names as 
a basis for invitations to prepare the papers and dis- 
cussions of the Congress. It is planned to publish the 
latter in in full volumes and one half-volume, the 
latter to include the proceedings of the opening ses- 
sion ami those papers that deal especially with the 
Panama canal. Space in the other volumes is to be 
allotted so as to permit covering the widest possible 
range in engineering. It is proposed that they shall 
collectively constitute a virtual encyclopedia of pres- 
ent-day practice, so far as main outlines are concerned. 

It is desired that the papers shall be of the 'Recent 
Progress and Present Status' type, and that instead 
of dealing in a restrictive way with particular prob- 
lems or describing particular constructions, they shall 
summarize important lines of progress in each branch 
during the last decade and note the present practice 
and probable future trend. 

Metallurgical Papers 

To mining and metallurgy a total of 750 pages has 
lii-en allotted, though many closely related subjects 
will he discussed in the volumes devoted to civil, elec- 
trical, and mechanical engineering. With the active 
cooperation especially of T. T. Read. Bradley Stough- 
ton. and C. W. Merrill, the following general outline 
for the metallurgical volume has been prepared. It 
is proposed that the volume shall constitute what 
may he termed a cross-section through the metallur- 
gical industry in 1915. The larger topics will each be 
under the general supervision of a special editor who 
will have charge of collating and arranging the papers 
by individual authors. It is not intended to exclude 
the citation of special instances to illustrate the gen- 
eral treatment of a subject, hut such citations should 
preferably consist of references to the bibliography of 
the subject which will serve to supply the reader with 
measurably full indication of the sources where im- 
portant original papers may be found. In particular, 
it may be noted that within the extent of space avail- 
able, it is not expected that the treatment can be to 
any marked degree detailed in character. It is de- 
sired rather that it shall be broad, comprehensive, and 
Suggestive. The general subject will be considered 
under 11 heads with sub-topics indicated: 

I. Iron and steel — Metallurgy of east steel, includ- 
ing founding: manufacture of steel and wrought iron; 
properties, uses, ami manufacture of alloy steels; met- 
allography of iron and steel; corrosion of iron and 

"J. Copper — Copper smelting practice; hydrometal- 
lurgy of copper; copper refining; Copper alloys: phys- 
ical properties and metallography of copper. 

3. Cyanide practice — Preliminary crushing: re- 
grinding; solution of gold: filtration: precipitation. 

4. Metallurgy of zinc and cadmium. 
.">. Lead smelting and refining. 

li. Metallurgy of aluminum. 

7. Minor metals — Nickel and cobalt, mercury, tin, 
arsenic, antimony, and others. 

8. Metallography and technology of non-ferrous al- 

0. Electrometallurgy — Iron and steel: aluminum; 
zinc : copper. 

1(1. Utilization of fuels — Pulverized coal: liquid; 


II. Ore dressing — Crushing and sorting: wet-c - 

January :<, l'.'ll 



centration; magnetic) work; Rotation. 
The volume on mining engineering h»* been planned 

with the special assisti I' 11 t' Hoover, P W 

Bradley, M I.. Requa, l» C. Jaokling, and incidental 
help from other members of the Institute. In it n 

slight),) different point of view baa I a adopted. It 

has i n thought that the si serviceable volume 

i hut could be produced would be one in which should 
be summarised the beat engineering practice as relates 
to distinctively mining problems. With this in view, 
it has beep proposed to leave to the other sections of 
the Congress the handling of subjects that are only 
incidentally mining and to bring together a group of 
papers t hut wonld afford .1 concrete picture of min- 
ing methods in 1915. It is thought that best results 
will be obtained by collections of somewhat detailed 
descriptions and analyses of the different mining meth- 
ods ;is exemplified by type examples and supplement- 
ing these bj very brief bibliographies and carefully 
planned discussion rather than by a general resume! 
'of the literature of each topic. The purpose- is. as 
far ;is may he, to have each subject handled by a prac- 
ticing engineer who has himself employed the method 
described. The following list of papers is proposed: 

Papers on Mining Methods 

1. Placer mining, including: (a) the testing and 
valuing of placer ground; (In hydraulicking (briefly); 
(c dredging, the hitter to be discussed in detail and 
to form the main part of the paper. In this and sub- 
sequent papers named, the object should he to de- 
scribe the methods, efficiency^ and limitations of the 

process. The re nt use of dredges for stripping iron 

ores may well he taken up in the discussion of the 
main paper. 

2. Steam-shovel mining: ("I the tnetliocls on flat 
lands with heavy cover, as in the Lake Superior iron 
district; (6) modified methods on steep slopes, as in 
the Western copper mines, with consideration of the 
methods of preparing and blasting the groupd; (c) 
substitution of drag-line scrapers, as in the Cuban 
iron-ore mines: (d) mill-hole work. 

:}. Caving systems in mining: (a) methods as em- 
ployed in the Lake Superior iron mines: {In modified 
methods useil in Western copper mines. 

4. Method used at the De Beers diamond mine. 
This was developed from a coal-mining method in 
wide use and shows relations both to caving and nar- 
row stoping. 

5. Sloping: as used in the Lake Superior copper 
mines with great depths and low angles of dip. 

6. Mining methods on the Rand, as an example of 
Stoping at great depth in persistent orehodies and 
where large-scale operations are possible. 

7. The eross-stoping method in use at Broken Hill. 
New South Wales. 

8. The rill and fill system at Kalgoorlie. 

9. Methods of filling. These methods have been 
worked out especially in European coal mines and are 
beginning to be employed at Seranton. Cripple Creek. 

and other point* in the I nitcd Ktatea Thci must 
ultimately be uaed even more widely, and the topic is 

therefore es| inll.i important. 

I" Underground transportation, These methods 

have been developed nmst large]) ii rI mines, and 

the metal miners have i h t" learn in tins particit 

lar. Qradea, curves, track, live power, ears, signals, 

and dispatching are some of the subdivisions t" I"- 

11. I host iii'_ r from depths, with Butte as the type 
example. Butte is chosen because of the Pad that the 
engineers there have passed through the stage of di- 
rect steam, and in the district may h.' seen both elec 
trie hoisting and a peculiar method of using com 

pressed air: a comparison and a stud.\ of limitations 
Of these systems would be especially important. 

12. Preparatory work and experimental mining and 

milling. Now that mines arc worked upon such a scale 
that millions must be invested in preliminary work 
ami in plant equipment, it becomes important to know 
what arc the most I Omical methods and what Un- 
wise limits of expenditure. Test-pitting, drilling, un- 
derground exploration, sampling, estimating, testing, 

the building and operation of pilnt-plants. should all 

receive attention. The ratio of preliminary expendi- 
ture to total investment is one to he carefully studied. 

13. Underground costs and efficiencies. This 
should he a general paper treating the subject in a 
broad way. not a men' compilation of unrelated costs. 
So far as possible figures should be reduced to a basis 
of tons per man per shift, and the relative economy of 
different types of labor and of labor as against ma- 
chines, studied in detail. 

14. Oil production, with especial emphasis on oil- 
well drilling. This involves engineering of a high <\<-- 
ttvvf of skill where many conditions must always re- 
main unknown. Oil is now an important part of the 
mineral output, significant from many points of view. 

Supplementary Meetings 

In addition to the Engineering Congress proper, sev- 
eral similar meetings will be held about the same lime. 
The Electrical Engineers plan a separate world's con- 
gress for the week preceding- the Engineering Con- 
gress, and about the same time the American Associ- 
ation for the Advancement of Science, and its affiliated 
societies, will be meeting;. In the week following the 
meeting of the engineers, an International Petroleum 
Congress is to be held, and at some convenient date 
the American Institute of Mining Engineers and the 
Mining- and Metallurgical Society are also to meet. Fol- 
lowing the meeting of the Sixth International Con- 
gress of Mining;, Metallurgy. Applied Mechanics, and 
Practical Geology, which is to assemble in London in 
June under the auspices of the Institution of Min- 
ing and Metallurgy, an excursion through Canada is 
planned under the patronage of the Canadian Mining 
Institute with a visit to San Francisco and a return 
through the United States to be arranged by the en- 
gineers of the latter country. 



January 3, 1914 

The National Radium Institute 

By Archibald Douglas 

Through the investigations of the U. S. Bureau of 
Mines, it became evident in the latter months of 1912 
that valuable radium ores were being shipped abroad 
to be manufactured into radium which was being sold 
back to this country at prices entirely incommensurate 
with those paid for the ores themselves. But worse 
than this, it was discovered that at least twice as much 
uranium oxide and its accompanying radium was being 
wasted in the low-grade ores that were thrown on the 
dump and the fine carnotite dust was being swept away 
by the winds and rain. Knowing the excellent work 
being accomplished by the Austrian Radium Institute 
and the Radium Institute of London. Charles L. Par- 
sons, chief of the division of mineral technology, of 
the Bureau of Mines, proposed to Dr. Howard A. Kelly 
of Baltimore and Dr. James Douglas of New York — 
both of whom he knew to be deeply interested in se- 
curing radium for use in two hospitals with which they 
were closely connected — that they form a Radium Insti- 
tute and endeavor to work up some of our American 
ores and keep the radium in this country for use among 
such of our own people as could be reached by such 
quantities as were secured. 

It was agreed, if the ores could be procured, that 
the Radium Institute would be founded and necessary 
funds furnished to work up the raw material. Mr. Par- 
sons went with Dr. Kelly to the Paradox valley in 
Colorado and inspected the mines there. On their re- 
tnni a conference was held with the officers of the 
Crucible Steel Mining & Milling Co. who owned 27 
claims in Montrose county, Colorado, which it had been 
holding pending such time as it would pay to extract 
the vanadium and uranium therefrom. The officers of 
the Crucible Steel Mining & Milling Co., appreciating 
the immense good that the radium in these ores might 
accomplish, consented to have these claims worked on 
a royalty basis under an agreement covering the re- 
turn of the uranium and vanadium content of the ore 
to them. Further conferences were then held with 
Doctors Kelly and Douglas, and the National Radium 
Institute was incorporated as announced in the paper 
given by Mr. Parsons before the American Mining Con- 
gress, at Philadelphia, October 24. 

For some months the Denver office of the Bureau of 
Mines had been carrying on laboratory experiments and 
investigations in the field with reference to the uranium 
ores, and a bulletin covering these investigations has 
just been published by the Bureau. Knowing of the 
work of the Bureau of Mines, the National Radium In- 
stitute proposed a cooperative agreement with the 
Bureau of Mines whereby the Bureau was offered an 
opportunity for scientific and technologic study of the 
mining and concentration of the carnotite ores in the 
claims secured by the National Radium Institute ; and 
for studying in the plant of the Institute the most effi- 
cient methods of obtaining radium, vanadium, and 

uranium therefrom, with a view to increased efficiency 
of production and the prevention of waste. The legality 
of the agreement was carefully looked into and full 
approval giwn by the government officials, it being 
found that there were many precedents in similar co- 
operative work, especially between the Department of 
Agriculture and the farmers of the country. 

In the agreement with the Bureau of Mines, the 
technologic management of the mines and mills was 
to be guided by the scientific staff of the Bureau, and 
Mr. Parsons has been designated by the Director to 
have charge of the investigation. He will be assisted 
by R. B. Moore, physical chemist in charge of the 
Denver laboratory who will have direct management 
of the plant, and by Karl L. Kithil, mineral technologist 
of the Bureau who in charge of the mining and 
concentration. Plans have been completed and con- 
tracts let for the experimental plant to be erected at 
Denver ; land for the plant has been leased ; over 100 
tons of carnotite has already been obtained; and the 
larger part of the apparatus has been ordered. 

In connection with the production of radium, the 
separation of uranium and vanadium will also be 
studied, and all processes, details of apparatus and 
plant, and general information gained will be published 
for the benefit of the people. As a result of these ex- 
periments it is hoped that other plants will be erected 
and that onr carnotite ores will be worked up at home 
and the radium kept in this country. The Institute 
was formed for the special purpose of procuring enough 
radium to conduct extensive experiments in radium 
therapy, with special reference to the curing of cancer. 
It is also expected to investigate the physical charac- 
teristics and chemical effects of radium rays. 

The radium produced will not be for distribution, as 
the work of Dr. Kelly has distinctly shown that to get 
real results in the treatment of cancer and other 
malignant diseases a high concentration of gamma rays 
is essential, and this at the present time can only be 
obtained from a comparatively large amount of mater- 
ial. Accordingly, to distribute the radium among many 
hospitals or physicians would render it practically in- 
effective for this purpose. Some hospitals at both New 
York and Baltimore are already partly supplied, and 
while it will be some time before a sufficient quantity 
of radium is produced from these ores to add greatly 
to the present usefulness of these hospitals, it is sin- 
cerely hoped that the work of the Institute will be of 
real benefit to many by assisting or possibly in con- 
trolling cancer, the most malignant of diseases. 

Besides being of benefit to the general public, the 
activities of the Institute are sure to assist the pros- 
pector and miner by providing a greater demand for 
his already rare ore and by assisting to conserve the 
large waste which is now taking place ; also to the plant 
operator by developing methods and by creating a 
larger market for his products. The radium produced 
is intended for the Institute's own use and is not for 
sale or distribution. 

Januan ;. 1914 

MINING AND Sell N I II h I'KI .s> 


Work of the National Societies 

American Institute of Mining Engineers 

By Cbabi i> 1'. Hand 
The American Institute oi Mining Engineers 
Beoond of the four largest national engineering sooieties, 
waa bonded on Maj 16, 1871. Its membership baa 
grown during its 42 years of life until, at the present 
time I November I, 1913), tin- re are 4309 members on the 
rolls. This is the largest in its history. The growth is 
showu in the following figures: 

1-71 284 

1881 1035 

1891 2082 

1901 2799 

1911 4210 

1913 4509 

Of the 4509 members, 3228 reside in the United States, 
181 in Canada. 254 in Mexico, and 846 in other 
countries, including almost every corner of the globe. 

Founded in a time when the profession of mining 
engineering practically included that of metallurgy, the 
name American Institute of Mining Engineers was 
sufficiently comprehensive to describe its scope, even 
though its activities have been concerned more with 
metallurgy than they have with mining and geology. A 
recent attempt to change the name to American Insti- 
tute of Mining and Metallurgy, was dropped because 
of sentiment as well as the pressure of other matters 
which were at the time deemed to be of greater im- 

It is the will of the members that Institute member- 
ship shall be democratic in character, and any person 
who is actively engaged in mining, metallurgy, geology, 
or chemistry is eligible to full membership, regardless 
of technical education or length of experience. Asso- 
ciate members are those persons who are interested in 
the activities of the Institute ; junior members are 
students in good standing in undergraduate courses of 
engineering schools. While following the will of the 
members in admitting all eligible persons upon a demo- 
cratic basis, the present Committee on Membership 
gives the strictest scrutiny to all applications, and de- 
mands convincing evidence of applicants' standing and 
eligibility before recommending them for election. 


The chief activities of the Institute are devoted to the 
distribution of information on mining, metallurgy, and 
geology by the presentation and discussion of technical 
papers at general meetings of the Institute and at meet- 
ings of the local sections, and by the publication of the 
best of these papers in the monthly Bulletin and annual 
volume of Transactions. The volume of publication has 
grown so large that, notwithstanding the rejection of 
a large percentage of papers received in 1913, the first 

ten month!) BvOttiiu of thai year contained 2604 pages, 

and. for tli.' lirst time in Hie history ..I" tin- Instil.. 

will be necessarj to issue threi volumes of Vrantaetioni 

ntain .-ill of ti„. valuable papers and d 
that have been accepted and presented .'it meetings. The 
money paid for printing and distributing the publica- 
tions of 1918, nol inducting editorial expense, was equal 
to thr total amount received from members in dues. The 
s.v.'i-al thousand dollars required for editorial and 
office expense, contributions for local sections, technical 
committees, etc., had to be secured from other sources 
of income. It is thus evident that in the Bulletin and 
Transactions alone the members receive more than the 
full value of their annual dues. In 1913 the Institute 
also published the Emmons volume on 'Ore Deposits,' 

which is a continuation of the previous Posepny volt i. 

The first local section of the Institute was established, 
after two preliminary meetings for the reading of 
papers, in May, 1911, with headquarters at New York 
City. Since that time, nine local sections have been 
established, in several cities, and steps are being taken 
for the organization of others in this, and in one 
foreign, country. The purpose of these local sections 
is to extend the benefit of the Institute by more frequent 
meetings of the members in each locality, for reading 
and discussion of papers, and for social intercourse and 

Technical Committees 

Because of the wide diversity of subjects included in 
the Institute's field of activity, and the necessity of 
specializing in order adequately to take care of these 
several interests, the Board of Directors has established 
a number of technical committees, which shall have 
charge of the interests of the Institute in their re- 
spective fields. Although the desirability of such action 
was suggested by William B. Potter in his Presi- 
dential address to the Institute in 1889, in the fol- 
lowing words: "It is hardly to be expected, perhaps, 
in an organization grown to such proportions as the 
Institute has assumed in the number of members and 
variety of interests represented, that a very efficient 
discharge of all its duties could be accomplished with- 
out the assistance of the systematic methods which a 
more definite organization would supply. In the 
scientific associations of wide and general range, the 
several interests are usually classified into groups and 
sections more or less fully organized and equipped for 
independent work ; and it has already been suggested 
that it might be well for the Institute to adopt a simi- 
lar course. As a suggestion for such a grouping at the 
start, the following might serve : I. Iron and Steel ; 
II. The Precious and Base Metals ; III. Geology and 
Mining; IV. Chemistry;" the first. such committee — 
the Iron and Steel Committee— was not established 
until April, 1912. This committee was successful in 
securing for the Institute a large number of important 



January 3, 1914 

papers and discussions on the subject of iron and steel, 
and its activities have been so important that in 
October, 1913, it conducted a general meeting of the 
Institute under its own auspices, for the presentation 
and discussion of papers. The second committee to be 
formed was that on Precious and Base Metals. This 
committee secured for the Institute a series of papers 
oi very great value, which were presented and discussed 
at the Montana meeting of the Institute and will be pub- 
lished in Volume XLVI of the Transactions, to be 
known as the Montana Volume. There are now eight 
Technical Committees in all: The Iron and Steel Com- 
mittee, chairman, Albert Sauveur; Precious and Base 
Metals, chairman, Charles W. Goodale ; Mining Geology, 
chairman, James F. Kemp ; Mining Methods, chairman, 
David W. Brunton ; Use of Electricity in Mines, chair- 
man, William Kelly; Mining Law, chairman, Horace V. 
"Winehell ; Petroleum and Gas, chairman, Anthony F. 
Lucas ; Non-Metallic Minerals, chairman, Heinrich Ries. 

The Institute can best carry on its work when all 
desirable, eligible men are on its membership rolls, and 
one of the functions of these technical committees is to 
secure the membership of desirable men within their 
fields of activity. More than one hundred members 
were added during its first year by the Iron and Steel 

The formation of the technical committee has been 
one means of bringing to the attention of the Institute 
management the large number of men who should be 
interested in the Institute's activities, but who are not 
members. For the purpose of securing the cooperation 
of all such desirable, eligible persons, a Committee on 
Increase of Membership was formed and through their 
efforts a number of new members have been secured. 

Library and Office Activities 

Upon moving into the United Engineering Society's 
Building in the year 1906, the Institute's library was 
merged with those of the American Society of Mechani- 
cal Engineers and the American Institute of Electrical 
Engineers, and placed under joint management. This 
combined library contains now over 55,000 volumes and 
regularly receives about 700 technical periodicals. The 
members have been slow to learn of the services which 
the library can perform to those who are not able to 
visit it : namely, by furnishing lists of references, ab- 
stracts, translations, copies, by lending books through 
the mail, etc. ; but, notwithstanding this, the library is 
rapidly increasing its activities for members residing 
at a distance. 

Mainly through the efforts of Dr. James Douglas, the 
land debt of the Institute, which was originally $180,- 
000, will be entirely paid off at the time of the annual 
meeting on February 17. 1914. This wiping out of the 
debt will not only relieve the Institute funds of the pay- 
ment of interest, but will give the Institute an unen- 
cumbered ownership of one-third of the United 
Engineering Societies Building, and the land on which 
it stands, worth altogether about $1,750,000. 

The Institute has recently established an Employment 

Department with the object of bringing employer and 
employee together. Although the work of this depart- 
ment has naturally been handicapped at first by lack of 
knowledge on the part of the members of the services 
which it can perform, it has been able to fill a number 
of positions during the past three months and its 
activities are rapidly increasing. The Employment 
Department not only publishes a list in the bulletin of 
'Positions Vacant' and the 'Engineers Available,' but 
is in frequent communication by mail and wire with 
those whom it can serve. As soon as the members of 
the Institute who are employers of engineers realize 
that the Employment Department is in a position to se- 
cure for them very promptly efficient men well suited 
to their requirements, this department can expect a 
great increase in its activities. The Institute maintains 
in New York a Members' Writing Room. 

The policy which the directors have favored this year 
has been that of encouraging participation in Institute 
affairs, through the committees, of as large a number of 
influential men as convenient. The result should be that 
the maiiagement will become impersonal and the Insti- 
tute's welfare at no time be dependent on any one man. 

The Mining and Metallurgical Society 

By H. M. Chance 

The Mining and Metallurgical Society of America 
is just completing the sixth year of its existence, a 
year in which its activities have broadened and its 
functions have expanded. I believe that the consensus 
of opinion among its members is that the year has 
brought about a better understanding of the aims and 
objects of the Society, fuller appreciation of its value 
to its members and to the profession at large, and a 
truer understanding of its position as an association 
which requires and maintains a certain standard of 
attainments — in experience, professional standing, 
achievements, or knowledge — as a qualification for 
membership, but which is in practice an essentially 
democratic body. 

Its members have understood from the outset that the 
Society was organized to perform functions heretofore 
neglected or but partly performed, and to provide a 
representative body by or through which the profession 
might speak on matters of professional or public inter- 
est, but whether it should also undertake work in 
other directions was not fully determined, and for this 
reason it has been moving slowly and deliberately, 
learning by experience, but at the same time it has 
been working steadily and successfully to carry out 
the objects of its organization. Its success in this di- 
rection has largely been through the efficient and pains- 
taking work of its committees. The steadfast loyalty 
and unity of purpose shown by its members during the 
past year have strengthened and rapidly matured the 
Society, conferring upon it, while still young, individu- 
ality and character in keeping with its tenents. 

In addition to the publication of matters relating to 

January :!, 191 I 



'•'"' business affairs, the Bvlktin of the Society 

baa included matters brought before the Sooiet) for 

utioii, a number of technical papers, contributions, 

and c ommuni cations upon geological and mining sul>- 

the discussion of some sociological problems and 

ta from iis eommitteea "n Mining Law, Standard- 

n, and <>n Boles for the Award of the Gold Medal 

<>f tin- Society. During the year the Society has | 

lions memorializing thi - of the United 

states to pass legislation providing for: (1) a new 
building for the United statrs Bureau of Mines; (2) 
a new building for the United States Geological Sur- 
vey ; and (3) the creation of a Patent Commission to 
recommend to the congress of the Unit.. I States any 
ation that may ho deemed necessary or expedient. 
As already announced in the Bulletin for November, the 

gold medal of the Society has 1 n awarded to Herbert 

C. Hoover and Lou Henry Hoover lor distinguished 
contributions to the literature of mining. The medal 
will be presented on January 13. 1914. at an evening 
session of the Annual Meeting of the Society which is 
to be held in New York City on that date. The Society 
will close the year in prosperous condition. It has an 
income larger than its expenditures, no debts, and a 
satisfactory surplus in its treasury. 

As the Society is too young to have a past by which 
its future activities may be forecast, the interest of its 
members is centred upon its present and future, upon 
what it is doing and can do for its members, and upon 
what it is doing and may do for the profession at large. 
I sball not attempt to discuss the many useful functions 
of the Society, but will mention only those that, in my 
opinion, are of dominating importance. 

Many of our members believe that the greatest serv- 
ice the Society can perform for its members is the 
promotion of engineering fellowship and friendship by 
drawing together in close association those who are 
interested in like work and who are actuated by like 
motives, and I think this belief is well founded because 
such association enables them to cooperate (within the 
Society) in advancing the interests of the profession. 
For precisely similar reasons it seems to me that the 
greatest service the Society can render the profession 
at large is to assist in bringing about a more thorough 
realization of the community of professional interests — 
in promoting professional solidarity — a matter of pro- 
found importance to the profession. "Within the So- 
siety, professional solidarity has made rapid progress. 
It is the force that now directs the activities of the 
Society and is one that must always be an important 
factor in controlling its destiny. How the influence of 
a like force can be extended to the profession at large 
may well occupy the future attention of the Society and 
of other kindred engineering organizations. These are 
some of the larger issues with which the Society will 
be expected to deal. They open fields of work in which 
the activities of the Society may expand indefinitely. 

Perhaps this resume would not be complete without 
some reference to the work of the local sections. Those 
members of the Society who are able to attend the 

local section meetings, And pleasure an. I profit in tha 
disonaaiona of technical matters, especially in 1 1 . 
expression of persona] views ami recital of parsons] 
experiences which the informal oharaoter of 
meetings permits. To enable a larger number of its 
members to enjoy these privileges, one of the future 
objects of the Society will be to establish local sections 
at a number of places convenient to the location of 
its members. 

The American Mining Congress 

By ( '.ii:: SOEOLZ 

The aim of the American Mining Congress has been, 
and will continue to be. the furtherance of any move- 
ment which will be of benefit to the mining industry, 
with special reference to the wishes of the greater 
number. The correct solution of the problems which 
will be of help to the majority with the least injury 
to the remainder is a task requiring due consideration 
and support from all quarters. 

Perhaps the most important work rendered by the 
Mining Congress has been its work in assisting in ob- 
taining, first, the establishment and, later, the neces- 
sary appropriations for the maintenance of the United 
States Bureau of Mines. There can be no division of 
opinion that the first duty of mine owners is to safe- 
guard the lives of the employees. That the Bureau of 
Mines has more than justified its existence does not 
require any further affirmation, but we believe its 
power and influence should be extended, and there is 
additional work for the American Mining Congress in 
this cause. 

Aside from matters of safety and economy in op- 
erating, general economic conditions are becoming 
more important to mines in this era of expansion when 
the growth of the industry increases by leaps and 
bounds; and decided changes in business methods be- 
come not only advisable but imperative. Within a 
half century the early mine operator who aided in the 
mining of his product was his own superintendent, 
engineer, and salesman, has developed into the head of 
operations whose daily output is many times greater 
than his former annual tonnage. Like changes have 
taken place in the methods of buyers, and laws have 
come to life regulating or endeavoring to regulate the 
industry. The old state of interests of the community 
is giving away to community of interests, and with 
the great number of vexing problems, no single indi- 
vidual or even a state organization can satisfactorily 
maintain its position. 

The purpose of the American Mining Congress is to 
bring together the mine owners scattered throughout 
this vast country, and by concerted action endeavor to 
improve the conditions of the industry in a dignified 
and broad minded manner ; to this end the cooperation 
of all mining men is invited, and it is believed that 
their moral and financial aid will be amply justified 
by results which can only be accomplished by united 



January 3, 1914 

The London Market 

By T. A. Rickard 

Introductory. — The year 1913 has been so full of faction. The organization of modern business was 

trouble to the mining market in London that those who never exemplified to better advantage than in the 

are superstitious may be forgiven for referring to the ability of the financial interests to withstand a strain 

second half of its name. It began under a cloud of so long, so severe, and so aggravating. The fact that 

anxiety created by the first Balkan war, and before the strain has been withstood warrants the expectation 

the early summer had seen that settled, the eomplica- that it will be overcome finally. But so long as war 

tions over Scutari threatened an embroilment of the between the United States and Mexico looms in the 

Great Powers. Then just when the spectre of a vast foreground, it is not likely that any market recovery 

conflict was vanishing in the Near East, the bourses will be recorded. 

of Europe were agitated by the internecine strife be- Among the shocks to public confidence, such as are 

tween the Balkan allies, the conclusion of which due partly to the risk implicit in mining and the 

brought further burdens in the shape of an insistent frailty inherent in joint-stock finance, are the disap- 

demand for loans on the part of the exhausted com- pointments or fiascos associated with the Orsk, Eldo- 

batants. rado, Esperanza, Santa Gertrudis, Mount Elliott, 

Meanwhile, the trouble in Mexico had been simmer- Bwana M'Kubwa, and Great Cobar mining companies, 
ing, with occasional explosive outbursts of anarchy, as On the other hand, gratifying developments highly en- 
when the Madero government went down, early in the couraging to shareholders have been recorded during 
year, and Huerta advanced through assassination and the year in connection with the Mount Morgan, Golden 
riot to the presidential chair. During the summer Horse-Shoe, Oroville Dredging, Nundydroog, Kyshtim, 
the hope was insistent among those interested in Tomboy, Naraguta, Renong, and Burma mines. Owing 
Mexico that the latest military adventurer to rise to to the general shrinkage of quotations, the improved 
supreme power would prove an effective despot, and prospects of many other mines have not been reflected 
that order would be brought out of chaos, so that in market valuations, but the number of them is con- 
mines and railways could be operated without molesta- siderable. 

tion. But the unruly element masquerading under a Transvaal.— The output of gold, on account of labor 

new name continued to devastate the country, and troubles, will scarcely exceed that of 1912, which was 

caused the cessation of industry over large areas. In £38,757,560 or $188,749,317. The mining industry of 

the closing months of the year the diplomatic inter- the Rand has passed its zenith, as is indicated by the 

vention of the United States has threatened, from day diminution in dividends, compared with the gross out- 

to day, to find a sequel in an armed incursion that pu t and so-called 'profits,' the last being a purely 

could only end in a big and costly war. These events, fictitious statistical statement of a highly misleading 

of course, have had a dire effect. Mines have closed- character, 
down, many have been looted, others are crippled by Gross. Profit. Dividends. 

the breakdown of railway transport. The railways 1910 £30,703,912 £11,567,099 £8,887,185 

have been dynamited or used for militarv purposes 1911 33,543,479 11,415.861 7.763,086 

... ., j . „ ., , .„ . \ 1912 37,182,795 12,678,095 7,952,994 

until the conduits of commerce throughout Mexico have m3 37,000,000 11,350,000 6,500,000 

been put out of use. As many of them have been 

financed in London, the present loss and the probability These figures, be it noted, apply to the Witwaters- 

of greater damage to investors have contributed to rand district only and do not include the 'outside' 

the general dismay. districts of the Transvaal. The totals for 1913 are, of 

Besides these events, the mining industry of South course, estimated. 
Africa has received a body blow from the effects of Reference has already been made to the strike and 
which it is still staggering. A strike of white miners riots in July. These have exposed the fact that the 
at the end of June led early in July to a sanguinary normal complement of 25,000 white men does not con- 
riot in the streets of Johannesburg. The cessation of sist of manual laborers, but of overseers in charge of 
work at many mines was bad enough, but the intimida- the 200,000 Kaffirs. The native is bossed by the white 
tion of the natives by the wild acts of their bosses was man, who receives from $135 per month at surface to 
worse, for it led to an exodus* of black labor from the $375 per month on contract underground. Against 
Rand. this the colored worker is paid 50c. per shift, and is 

Thus war, insurrection, and riot have loomed large housed and fed in a compound. He costs the eom- 

during the year, freezing the currents of speculation, panies about $20 per month. Owing to incitement by 

and causing a shrinkage of quotations that, as we shall labor agitators from Australia and America, the white 

see, is astounding. Indeed, the absence of defaults and worker has become increasingly assertive. For this 

bankruptcies, entailing a panic, is a striking feature of he has some excuse, but not much reason. The excuse 

the position, even if it brings but a lugubrious satis- is the prevalence of phthisis, which itself is largely due 

January :). 1914 



to the workman's unwillingness to adopt palliatives, 

RSh as respirators ami water «praj s. On the part of 

the companies, the deficiencies in ventilation may !>■• 
shed, ami the lack of affeetivi iit riil, dm to the sen- 

tralizatiun of management at the lniul oll'u-is of the 

tinaneial groups, wln-r. I>y the manager has lost 

gc ami influence with his white employees. 

Dissatisfaction, some of it real and some of it merely 
vicious, has thrown the local industry out of gear, and 
on the top of that the violent quarrel among his bosses 
of the dominant race has caused the Kaffir to become 
unruly in some cases and intimidated in others. Hence 
the unwillingness to renew contracts on the part of 
time-expired natives. The recruiting for colored labor 
had been vigorous and far-reaching; finally, in March, 
the total supply was augumented to 231,700, but even 
that did not suffice for the needs of the mines. Then 
came the strike and the cessation of recruiting, with 
rapid withdrawals to the kraals, until in October the 
total supply had shrunk to 170,000, the lowest since the 
earl}' part of 1910. 

This shrinkage has been hardest on the low-grade 
mines, which, to earn a profit, must be operated on the 
full scale. As the low-grade mines are also, for the 
most part, the deep-level properties, it is not surpris- 
ing that several of them are defunct. Among the mines 
that have closed down are the Apes, Benoni, Clover- 
field, Cinderella Consolidated, Jupiter, French Rand, 
Van Dyk, Simmer & Jack East, Rand Klip, Lancaster 
"West, Rand Collieries, Volgelstruis, Treasury, and 
Jumpers. The last two are outcrop mines with a good 
record, but now exhausted. Among the mines on which 
operations have been discontinued are two of the deep- 
est on the Rand. This may be noted in connection with 
the statement of H. H. Webb, in his report for the 
Consolidated Gold Fields of South Africa, that the 
mines of that group show undoubted signs of im- 
poverishment in depth. In this respect the Gold Fields 
properties are not unique. The recognition of this 
basic fact of non-persistence of ore is interesting, but 
belated. Some of my readers will remember an article 
entitled 'Even Methuselah Died,' written by me in the 

Bnginttring ,i Mining Journal in .May, 1903, iu whist 
1 deprecated the suggestion thai the banket lod 
the Band had the uniformity and persistence of coal 

sr: "" s - Th Dglomerate persists, bn1 ih>- gold d» 

oreases, in depth. When a banket oeasea to i>e profita- 
bly gold-bearing il loses its e tomio characteristic and 

becomes the plain 'pudding-stone' of early v*iol 
! "gy. 
Last year at this time 1 was able to in- 
Btance the development of the Far Eastern 
portion of the Rand as an outstanding fea- 
ture of the year. During 1913 the progress 
of work has been highly satisfactory in the 
case of the Van Ryn, the New Moddcrfon- 
tein, the Modderfontein B, and the Moddcr- 
fontein Deep, but results from the Brakpan, 
Government Mining Areas, and Geduld have 
been disappointing. The Brakpan has had a 
bad time owing to a caving of the hanging 
wall and the poor returns from new work- 
ings. The drop in the quotation has been 
lamentable. The following list of quotations 
exhibits the fall in market appraisals of the 
leading mining companies operating on the 
Rand : 

Rand Mines 

Central Mining 

Con. Gold Fields 

General Mining 

Crown Mines 

East Rand Proprietary 


City Deep 

Con. Langlaagte 

Randfontein Central . . 

Village Deep 

New Modderfontein . . . 
Van Ryn 

Dec. 1, 1912. Dec. 1, 1913. 

£6Vj £5V4 

9% 7% 

• •3% 2 

. . 1 Vfc 

7" 6% 

2"/„ 2 

..4 2% 

3 2% 

1% 1% 

1% 1% 

•■2% 1% 

12% 11% 

3% 3% 

As I said last year, the space given in this review to 
the Transvaal emphasizes the dominance of the Kaffir 
market, as is called that department of the Stock Ex- 
change devoted to Rand securities. The gloom at 
Johannesburg is bound to affect the whole mining 
market. Liquidation has been on a big scale, as quota- 
tions show, but it has not, I believe, gone too far, in 
most cases. The market valuation of mines is preposter- 
ous in boom times, it is exaggerated in ordinary times^ 
and it only comes down to realities in periods of exces- 
sive depression. A rebound may be expected, but it is 
likely only to afford the insiders a chance to unload 
on the public. 

Rhodesia. — The annual output of .gold, estimated at 
£2,900,000, shows an increase ; but it is small, and in no 
proportion to the discounting of the future that has 
marked Rhodesian finance. I confess to a prejudice 
against this part of Africa, for it has been the scene of 
the most unblushing stock-jobbery, highly injurious to 
the business of mining. During the year the notorious 
Amalgamated Properties has gone to the wall, with re- 
construction ; the Giant has gone 'scat,' as the Cornish- 



January 3, 1914 

man says ; the Eldorado and Lonely Reef have had some 
of their inflation reduced ; the Falcon has been the sub- 
ject of an unpleasant episode ; and the Shamva has 
shrunk in valuation to something nearer its merits. This 
mine was bought for £65,000 and transferred for £400,- 
000; as soon as the Company was formed, the 500,000 
shares were kited to £5%, on optimistic reports and 
market juggling, to drop to £1% 
now that the mill is about ready 
to start. The Globe & Phoenix 
is still the largest producer, 
yielding 10,500 oz. gold per 
month, but it has been rendered 
ridiculous by a fight over di- 
rectors' fees and by the squab- 
bles among cliques and coteries 
of shareholders. At the end of 
1913 there is talk of a revival in 
Rhodesian mining, meaning a re- 
newed outburst of speculation, 
by reason of the proximate be- 
ginning of profitable production 
at the Shamva, Cam & Motor, 
Antelope, Falcon, and Eileen 
Alannah mines. Of these the 
Cam & Motor is much the most 
promising; whether the others 
will justify the expectations now entertained, we doubt. 
However, the increased yield of gold from these 
properties will be a stimulant to the market in 1914. 

The downward trend of quotations is seen by the fol- 
lowing list, of which it can be said now that not one 
depreciates the true merits of the mines : 

Dec. 1, 1913. 



2y t 

and ought to prove generally beneficial to industry in 
Rhodesia. Unfortunately the proposed alienation of 
the land to newcomers is meeting with opposition on 
the part of the resident white population, and threatens 
to make troubft for the Chartered company. 

West Africa. — This part of the world, from the 
miner's standpoint, is now divisible into the Gold 

Cam & Motor. . . . 


Globe & Phoenix. 



Lonely Reef 




Dec. 1, 1912. 




Of the two chief copper enterprises, the Bwana 
M'Kubwa was the victim of a fiasco, due. to an errone- 
ous assumption of the specific gravity of the ore, and 
still has to face sundry metallurgical uncertainties, 
while the more famous Tanganyika Concessions has two 
blast-furnaces in operation at Katanga, producing 
about 900 tons of copper per month. Fine ore is being 
briquetted, and the Company is making its own coke at 
Wankie. However, the performance seems small enough 
after the big promises of four years ago. 

One of the events of the yea» has been the effort 
made by the British South Africa, usually called the 
Chartered company, to develop the agricultural re- 
sources of Rhodesia, by encouraging immigration and 
settlement on the land. This promises to help many 
of the land companies, and some of the mining com- 
panies that own land. It is a commendable departure, 

Coast and Northern Nigeria. All the enthusiasm of 
early exploration has died out of the Jungle market, 
as the West African gold mining department is called. 
The annual output of gold, estimated at £1,630,000, 
shows a small increase, but it has become realized with 
regrettable tardiness that the cost of operations under 
conditions so adverse to white men has been under- 
estimated all along. A good example is afforded by the 
Prestea, a splendid gold-quartz vein, where the yield 
was estimated repeatedly at 40s., as against a cost of 
20s., per ton. After several years of disappointment 
it is clear now that the yield is 33s. per ton, while the 
cost is 26s., so that the net resultant profit is about 7s. 
as against the roseate predictions of 20s. per ton. The 
Ashanti Goldfields is doing well, both as to output and 
dividends, but here also expectations are now on a 
lower and less flamboyant plane. The Broomassie is 
doing better, but far below the promises of its prospec- 
tus. The Bibiani has joined the Cinnamon Bippo, 
Effuenta, Fanti, and other 'has beens' of the insalu- 
brious jungle. Of the mines on the banket, once sup- 
posed to give the promise of a second Rand, the Taquah 
and the Abosso are both creditable enterprises, but the 
margin of profit is small. The Abbontiakoon, which 
resumed crushing in the second half of 1912, has 
steadily increased its output, but the inability to re- 
duce the cost is a severe handicap. Two dredging com- 
panies, on the Offin and Ancobra rivers, respectively, 
manage to make a profit, but this is done under difficult 
conditions, both as to submerged timber and unfavora- 
ble climate. No new enterprises of any consequence are 
coming forward, so that an expansion of the gold min- 

January :i. 1914 

MINING AND m II. Mil |< |'«| » 

big industry in Weal Africa is unlikely. A few com- 
parative quotation! an appended: 







Omn Itlv.r 

KantI Consolidated 






Dec 1. 1913. 




Tin mining in Northern Nigeria is making progress, 
;i-. is indicated by an increase of production ami the 

in.. it systematic exploitation of the alluvial deposits. As 
yet ii" veins or lodes of any importance nave been un- 
covered. Tin' output is the yield mainly from 'calabash- 
ing,' or panning, of rich patches of grave] by native 

workers, who are paid from 1 t" G pel per pound for 

the tin concentrate. Ditches and pipe-lines air under 
construction by several companies, notably the 
Naraguta, Naraguta Extended, Rayfield, Bisichi, Ropp, 


and Kaduna, while two companies, the Jos and the 
Benue, have just begun to work with dredges. If the 
latter are successful, it will be an important advance, 
but I am not hopeful as to the correctness of the pro- 
cedure, because the clay, irregular bedrock, and 
patchiness of the alluvium all militate against effective 
dredging operations. 

The output in 1912 was 2532 tons of concentrate, 
averaging about 70% metallic tin; for 1913 it is proba- 
ble that the production will be 5000 tons of a similar 
product. The largest producer is the Naraguta, which 
ships from 60 to 75 tons of concentrate monthly to 
England. The Rayfield sends from 40 to 50 tons, the 
Naraguta Extended from 25 to 40, and the Bisichi from 
25 to 36 tons per month. A good deal of this concen- 
trate goes to the smelter at Bootle, near Liverpool, 
erected by Richard Pearce and his son, Frank Pearce, 
formerly at Denver, Colorado. 

Scarcity of labor, as yet, has not become a discourag- 
ing factor, but the competition between the companies, 
with offers of higher wages, may render the position 
acute unless restraint is exercised. Lack of cheap 
transport, of course, has hindered the introduction of 

machinery. Moal of the tin to far axported bat bean 
carried on the backs ..f aativea, The oonatrnotion of 
railways k being pushed with commendable seal. The 
present railway runs from Lagos to Cano; the branoh 
line t" Bahama is being continued to the Bauohi 
plateau (which is the tin region . I<a\ in^ the main line 
at Zaria and terminating at Bukeru. In addition, the 
Government proposes to construct a more direct line 
from tli.' mouth of tin- Bonny river, where deep water is 
available, through the Ddi coalfield, across the Benue 
river, along the edge of the Bauchi plateau, to Kaduna, 
where it will join the existing railway. This line will 
be 530 miles long and will shorten tin- distance from the 

mill's lo |Ik ,ist by fully l'in mi 

The following quotations indicate a fairly vigorous 

market in Nigerian tin shari 



Naraguta Extended 






Dec. 1,1912. Dec. 1,1913. 

lGs. lis. 

.. i r, 

lis. 13s. 
3% B' 

l ' . % 

1% "/,. 

6s. 7s. 

7s. 8s. 

America. — This part of the London share-market in- 
cludes Canadian, Mexican, and South American mines. 
It is nothing like so important as it used to be before 
the Rand and Western Australia came into prominence, 
and in the days when the Exploration Company was so 
active in the Rocky Mountain region. The Treadwell 
group, in Alaska, has an agency with the Exploration 
Company, and the three mines on Douglas island con- 
tinue to do particularly well, but share-dealings are 
small, as is apt to be the case with mining of this con- 
sistently satisfactory character. The Granville com- 
pany, formed in 1911 to exploit large alluvial areas 
along the Klondyke valley, in the Yukon, has under- 
gone re-organization, the interests formerly controlled 
by A. N. C. Treadgold and J. W. Boyle being 
respectively incorporated under the names of the North 
West Corporation and the Canadian Klondyke com- 
pany. Both the former controllers remain as general 
managers, and active dredging operations have been 
under way during the past season, with results con- 
sidered quite satisfactory. Another dredging company, 
the Oroville, which started as a Californian enterprise, 
has gained renewed life by the acquisition of an alluvial 
area at Pato, in Colombia, where a dredge has been at 
work since March with highly satisfactory results, the 
digging of 315,000 cubic yards during the past 8 months 
having yielded $205,000 worth of gold. So far, the 
digging has done considerably better than the drill- 

Another enterprise, involving dredging together with 
land reclamation is the Natomas Consolidated, the 
bonds of which, to the amount of $15,000,000 were 
issued in 1910. After three years it has been 
acknowleged that more working capital is required and 
a reconstruction for that purpose is imminent. The 


yield from dredging has fallen short of the $5,000,000 consorts with Mexican affairs at the present time. The 

estimated by $2,000,000. In the land business also ex- trend of quotations is shown herewith ! 
cessive liabilities have been incurred. However, the 

fiasco is more surprising than conclusive, for the re- A , aska Treadwell Dec. ]. 1912. Dec. 1,1913. 

sources of the Company are enormous and only require ei Qro '. . . . n* 14= 

a little less flamboyancy in administration. Esperanaza 2% 1 

In Colorado the Independence, at Cripple Creek, is Mexico Mines 7% 5 

now near an end, the profit coming entirely from the Camp Bird 23s. 14y 2 s. 

milling of the old dump ; in the same way the Camp ... _ .. J™ •* 

D . , b ,. „ ■ 1 u c 11 Oroville Dredging 5s. ll%s. 

Bird, after a fine career, is known to be finally ex- Tomboy 1% 1.% 

hausted, the Company owning it having transferred its Granville 14%s. 10s. 

energies to the Santa Gertrudis, a silver mine in Casey Cobalt 2% 2% 

Mexico, and the Messina, a copper mine in the Trans- Cobalt Townsite 3% 2V4 

vaal. A further deal involving the Bonanza and Q , ,-, . ,. • , , , . 

„. . . ... & ..... . several Cobalt issues have been prominent in the 

Siempre viva mines, in Isicaragua, is being incubated „i,„„„ „„_!.„.. _i ui ±1. ^1 v u m -i ,-, 

* . . .J ' .°7 . . , . share-market, notably the Cobalt Townsite, Casey 

in the interest of the Camp Bird, which is now prac- r^k^u n-1,-14. t 1 j /^ b r, t_ h mt 1 

„ , ... K ., ' . , . Cobalt, Cobalt Lake, and City of Cobalt. The last men- 

ticallv a holding company for blocks of shares in va- .• , ■ .,. m , „ , „ , 

• mf m u 1 -^,1 j -j- tioned is a wild project. The first two are controlled 

nous mines. The Tomboy, also m Colorado, is doing . „ ■& <> -it n i tji_i j> 

.. ,. ... .. . , . ■ by Rose & Van Cutsem, London brokers of good repute. 

well, and has added another chapter to a record 01 wise T , ■ • ■ .. ., • , 

, , , , , ■ . , .. _,, „ Ibeir mining operations in the new year are to be 

management and honorable administration. The Tom- „ .,, T . l t\>a -m- ^ \. -rm 

.f .. .. , j j guided, I hear, by D'Arcy Weatherbe. When the 

boy itself, and then the Argentine, were acquired and m •. . , .. .. . . . _ , ,, ,, 

, , \ .. _ 6 . ' .. * _ Townsite was taken over, it was thought at Cobalt that 

worked out; now the Company is operating the Reve- tj •<.• 1. i„ t . j u <i_ j j 1 . > . 

„ ' , . . ~f ,. . ■ 1 t • British speculators had been 'handed a lemon,' but 

nue or Montana claims, in the same district, and is . . j-i.ii.-ii. , 

, . » x « ,„„_, ' . events have proved quite otherwise, the exploratory 

making a profit of $2 <5, 000 per annum from a property „.. L j. Jt „„.; JL .i . t ,, » „ » ., , . 

i A.n^nnr, i work carried out by the manager, A. C. Bailey, having 

that cost $400,000 only. , , . , , . , t^, ., .! , ., ' . 

j < iv ™ « * ; been highly successful. While these calcite stringers, 

As regards Mexico, the El Oro district is the most e „ t .. ., ,, , , . . . . . 

i- T ', , , m , .. full 01 native silver, are not well adapted to joint- 

important to the London market, lhere, the parent . , .. ., . , - ■, ., . ^, , ,. 

• .v i>i n «• ■ o -r. ■, ^ i. stock operations, it must be confessed that the public, 

mine, the El Oro Mining & Railway Co., continues pro- _*__». tJ r.j, , . r, . ,, . . ., % 

.' ...... .'. y so far, has not done badly out of Cobalt : but the danger 

ductive on a diminishing scale, without any prospect » *„„„„•„ * *• ., . 

, it m, t^ J „ ,, . i, i of fallacious expectation is ever present in the case of 

in depth. The Esperanza and the Mexico, the two •■ « , , T ., . ,, 

,. r , . y ± , . ', , deposits of such a character. Incidentally, it may be 

adjacent mines on the same vein system have de- noted ^ ^ Associated Gold Mineg of Wegtem Aug _ 

predated greatly in value, despite sundry discoveries ^^ hag an n Qn ^ Keel ^ Smth Lor _ 

underground that seemed to postpone the day 01 ex- . , ., . .. ... . * . . , ,, 

i- m « n 1 11 ■ A 11 ■/ c xu ram > m thl s option is likely to be exercised, the 
haustion. The Dos Estrellas, on the other side of the ,. , j^j ji^j^iT 

, „ ,, , , exploratory work conducted under the direction of J. 

hill, has gone the way of most mines that are boomed ,, , . . , D „ , . , ... „ . 

', _ . , iiT. 1 .,^ ^1 j- Mackintosh Bell having been remarkably successful, 

on the Pans bourse. At Pachuea, the Santa Gertrudis , , ., ., _ , . , 

, , , , . . , , .. , . . , More recently the same Company has taken an option 

also has had a bad time, aggravated by the belated ., XT ., m , . . _ . r _. . 

, . , . , '. 6S . ' i, , on the North Thompson propertv, at Porcupine. This 

manner in which information was given to the share- , . . ., „ ... , ., _. _ . _,, 

„ , , , n , , . .. °, , . ,. .. ., adjoins the Holhnger and the Crown Porcupine. The 

holders. Below the 18th level the lode is distinctly „ „. .. ,. , , , , „ , .. ^.j. . . 

, , „. , . , . , , . Holhnger itself had had a small hold on British in- 
poorer, and the 20th level, now being extended, is , . , , , , , , . .. . .. 

r . ,,. ' , .,..',, . . , terest, which has been rewarded, but participation m 

yieldmg results nidicatmg further impoverishment. .. , . „ „ . , , r . r 

* r., , . , j. 1. the development ot Porcupine has been scant, owmg to 

Meanwhile cross-cuts on the upper levels are finding , , . ., „ 

,, , , ,. „ ., ,, untoward happenings three years ago. However, sev- 

branch veins, and parallel orebodies of considerable . _ ,. , . , ° . .. , ' 

. . . . . . . eral English companies have scouts m Northern On- 

promise, so that lateral development m this mme, as . , ., _. , , . T , , , ... , 

, r , . „ tario, and the Kirkland Lake developments are likely 

m others, may lead to the development of fresh re- ,. ... . , .. . .^ _ ,. 

',.,,. m, t, m- to stimulate organized prospecting m the Canadian 

sources of decided importance. The Buena Tierra, . T , 

Avino, Mazapil Copper, Palmarejo, Barranca, La Fe, 

and other mines operated by British capital have been Australasia.— This part of the world has been promi- 

shut down owing to the condition of anarchy in which nent on the Stock Exchange by reason of the activity 

Mexico has been passing during the past year. New in Broken Hill shares. The great Barrier district in 

issues have been few. The Reforma mine at Campo New South Wales, famous for its silver, is now one of 

Morado was examined for the Camp Bird people, but, the leading sources of zinc and lead supplies. Flota- 

for sundry reasons, one of which was the political un- tion processes of concentration have enabled ores for- 

rest, it was dropped. A new company, financed by a merly regarded as inextricably refractory to be sep- 

prominent South African operator, Hans Sauer, was arated into their constituent metallic sulphides in the 

formed to take options on various properties at form of various marketable concentrates. During the 

Pachuea and in Oaxaca, but nothing important has re- past year a selective method of flotation has further 

suited as yet. As soon as the country is quieted, I facilitated profitable treatment. Meanwhile, the big 

expect to see a notable stimulus to British participa- orebodies give signs of continuity. The parent mine, 

tion in Mexican mining, but quiet is a word that ill the Broken Hill Proprietary, has an ore reserve still 

.January 8, 19] I 


over u',000,000 tons, besides about 1,000,000 tons of sjno 
tailing yet to be treated. An iaraa of MO.OO0 shares al 

eh was made by tliis Company early in thi 
Cor the eetabliahment of an iron and steel indoatry, 

I on immense deposits of ore at Iron Knob, on 
Spenoar's Gulf. The Zinc Corporation, in addition to 
its large milling plant, operated on accumulations of 
tailing, acquired the South Blocks mine in 1010, and 


has opened up on the 8th level ore 50 to 80 ft. wide 
of normal contents, namely, 14% lead, 10% zinc, and 
2% oz. silver per ton. A new lode, west of the main 
Broken Hill lode, has been developed on five levels ; 
it represents a mineralized zone of great importance, 
for it may prove a new asset to several other mines, 
namely, the South, the Block 10, and the Proprietary. 
This west lode is characterized by an excess of zinc, 
which can now be extracted profitably. In the South 
mine this lode has been tested by drilling, which has 
proved 31 ft. of ore assaying 16% lead, 10% zinc, and 
4 oz. silver; and it has been traced from the 825-ft. 
level to the 1070, enlarging at the lower horizon. Both 
the North and South companies are prospering, and 
have increased their dividends. In October the main 
lode in the North mine was cut on the 1400-ft. level, 
exposing 112 ft. of ore averaging 17%% lead, 15% 
zinc, and 10 oz. silver. This is an improvement in 
grade, and augurs well for the future. In the British 
and Block 10 mines also there have been disclosures 
of fresh ore of a promising character in the western 
ground. The Sulphide Corporation, owning the old 
Central, has struck the western lode at 1300 feet. 

West Australian mines are less prominent, owing 
to the decline of the big producers at Kalgoorlie. But 
it must be admitted that they are dying hard, and are 
being managed with a care unknown in the bonanza 
days. The Golden Horse-Shoe, Ivanhoe, Great Boulder, 
Lake View & Star, and Kalgurli are still very much 
'on the map,' and in the outside districts the Sons of 
Gwalia and Great Fingall evince signs of vitality. The 
discovery of a rich but erratic orebody in the Vic- 
torious mine at Ora Banda created some excitement for 
holders of shares in the controlling company, the As- 
sociated Northern Blocks, and the beginning of mill- 
ing operations in the Bullfinch Proprietary, the sole 
survivor of a wicked boom, has been another cheerful 

Among other noteworthy incidents in other parts of 
the island oontinenl I may mention the passing ■ 

"""' '" ""' {:u is oft Morgan from the estates of the 

Hall brothers to w. k. D'Aroy and the Qna of Lionel 
Robinson, dark A «... a block of 860,000 shares was 
involved in this transacts,,, which is the Oral step to 
a complete re-organisation, under the resident man 
agement of Benjamin Magnus, who succeeds <:. \ 
Richard, so long associated with the success of the 
mine, which is now an important producer of copper, 
as well as gold. In Queensland also are the Mount 
Klliott, Great Fitzroy, and Hampden Cloncurry— ell 
copper mines. The former is now deeper than the rich 
orebody to which it owed a brief prominence, the sec- 
ond is still struggling with the application of flotation 
to a low-grade complex ore, while the third has suf- 
fered from labor troubles and a fire. Another copper 
mine, the Mount Oxide, has been registered as an 
English company and is likely to do some good, having 
rich orebodies and an energetic management. The 
London control, however, is market-wise and not one 
to inspire public confidence. 

The leading quotations reflect the local situation : 

Dec. 1, 1912. Dec. 1, 1913. 

Broken Hill Proprietary 45s. 34s. 

Broken Hill South 8% 7% 

Broken Hill North 1% *iy„ 

Zinc Corporation 18s. 17'/iB. 

Golden Horse-Shoe 2% 2% 

Ivanhoe 3% 2% 

Great Boulder 13s. 14s. 

Bullfinch Proprietary 9s. ll%s. 

Sons of Gwalia 1% iy 5 

Great Fingall 8s. 13s. 

Waihi 1% 2% 

Great Cobar 4% 17 Vis. 

Mount Elliott 1% 4 

Mount Morgan 3% 3% 

Hampden Cloncurry 2% 1% 

•Capital increased from £200,000 to £600,000 during the year. 

Three promising mines have been shut down owing 
to metallurgical difficulties, namely, the Gwalia Con- 
solidated, Laneefield, and Tuanmi. The first of these 
yielded gold to the value of £400,000 down to 100 ft. 
in depth, when the ore became refractory, owing to 
arsenic, with graphite. The orebody is said to be 3500 
ft. long, and at 500 ft. (according to several bore-holes) 
it assays 11 dwt. per ton for a width of 36 ft. The 
Laneefield vein is higher grade, but not so wide. 
Arsenic and more graphite are here the trouble. At 
the Yuanmi antimony is the obstacle. These three 
properties offer a big chance to metallurgical inge- 

The worst episode of the year in Australian mining 
has been the debacle of the Great Cobar. The £5 shares 
once quoted at £12 (making the valuation £2,238,504) 
are now at 18 shillings, and they are not worth that. 
It is an old story. The purchase price of the mine was 
much too high, the promotion loot was too big, the 
working capital was entirely inadequate. Seven years 
of toil and trouble, varied by one dividend that ought 



January 3, 1914 

not to have been paid, have now ended in a recognition 
of some of the facts, with a debenture debt of £725,000, 
and a mine that looks feeble on the bottom levels. A 
fine property has been irretrievably despoiled. The 
"Waihi, which furnished the sensation of 1911, shows no 
real signs of recovery. Labor troubles have hindered 
deeper exploration, which so far has yielded no results 
of importance, only assays that have caused the quota- 
tion to rise to an unwarrantable extent. 

Russia. — Anglo-American enterprise continues to be 
both prominent and successful in Siberia, notably in 
copper mining. The Kyshtim, with which Leslie Urqu- 
hart, H. C. Hoover, and A. C. Beatty are prominently 
identified, has developed into a big property. R. Gil- 
man Brown is the consulting engineer. According to 
his latest report, the total reserves in October amounted 
to 2,054.000 tons of assured ore and 397.000 tons of 
probable extensions. The average copper content of 
the ore being smelted, at the rate of 600 tons per month, 
is 3%. The output for 1914 is estimated at from 9000 
to 10,000 tons of blister copper. Drilling has been a 
prime factor in discovering and exploring the various 
orebodies, of which there are four groups, constituting 
as many mines. The smelting plant includes the most 
up-to-date equipment, including an electrolytic refinery. 
The Hoover-Beatty interest in Atbasar has passed to 
the Spassky, which is administered by Ehrlich & Co., 
and includes a French interest headed by E. Carnot 
and F. Robellaz. E. T. McCarthy is the consulting en- 
gineer. The mine has just been deepened to 630 ft., 
where a cross-cut has penetrated the lode, exposing 
ore averaging 12% copper. The main orebody of the 
mine is 250 ft. long and 30 ft. wide, while the smaller 
orebody is 30 ft. wide for a length ranging from 80 
to 120 ft. The average output runs 20% copper, chiefly 
in bornite, but the second-class ore, averaging 8%, is 
being accumulated, pending the completion of the con- 
centrating plant. Dividends of 35% have been paid 
on a capital of £595.330, increased by the absorption 
of the Atbasar to £950,000. The production of copper 
is from 400 to 450 tons per month. So far 21.000 tons 
has been produced. At the Atbasar the previous ex- 
ploration by boring is being fully verified by sys- 
tematic development. The ore is a sandstone impreg- 
nated with bornite, yielding an ore averaging 8% in 
copper. The workings are shallow — only down to 250 
ft. — owing to the fact that the deposit conforms with 
the dip of the strata. The erection of a smelting and 
concentrating plant is under way; when completed, a 
production of 500 tons of copper per month is antici- 
pated. The resident manager is H. C. Bayldon, who is 
said to be doing excellent work. 

Another promising enterprise is the Tanalyk, which. 
in 1912, acquired the property of a Russian company 
operating in the southern Urals. The control is nearly 
identical with that of the Kyshtim. A debenture issue 
of £200,000 was made recently for the purpose of com- 
pleting the equipment, capable of treating 220 tons of 
ore per day and producing 1500 tons of copper per 
annum. As yet this is only a large and promising pros- 

pect. The chief mine of the group is the Mambet, only 
165 ft. deep, exposing a lode 10 ft. wide, assaying 2 to 
3% copper, with 8 dwt. gold, and 10 oz. silver per ton. 
The first unit of the smelter to be ready in London. 

The Sissert^ which is also in the Ural mountains, was- 
placed on our market in 1912, and since then has been 
quietly developed by means of bore-holes and mine 
workings, while increasing its production of copper to 
about 100 tons per month. Dividends of 10% are being 
paid on the capital issued, namely, £600,000. 

The gold mines are not doing so well. The rich 
alluvial ground of the Lena Goldfields is being ex- 
hausted, although the returns do not show it. During 
the past season 820,189 cu. yd. of gravel was washed 
for a yield of £1,424,468, or an average of about 8 dwt. 
gold per yard ; in 1910 the yield was £1,551,849 from 
748,896 yd., or an average of 10 dwt. per yard. The 
cost is 25s. or about 6 dwt. per yard. The Company 
bought £82,880 worth of gold from its employees. 
Owing to Russian control of the management, the 
English shareholders get scanty technical information. 
The Consolidated Gold Fields, once the principal share- 
holder, sold out most of its holding long ago at about 
£4. The shares are now at £2. An effort to introduce 
American technical methods failed. A recent inspec- 
tion by C. W. Purington may presage sundry technical 
improvements. Meanwhile the surrounding region has 
been investigated by several American and British 
engineers, with a view to new enterprises, but the re- 
moteness of this Bodaibo district is a severe handicap- 
According to late advices, a railway is to be built down 
the Lena valley from Irkutsk. 

The Orsk Goldfields is not doing any good. In 1912 
the gold extracted was worth £36,662, as against an 
operating cost of £10,509, but the administration, roy- 
alty, maintenance in winter, and London expenses re- 
duced the illusive profit of £26,154 to a loss of £3144. 
In the same way the Troitzk had an operating profit of 
$7800, but a real loss of £600. These theatrical state- 
ments of profit are ridiculous. The plain fact is that 
both mines are being worked at a loss. No new gold- 
mining enterprises in Russia have come into promi- 
nence during 1913. but a great deal of scouting has 
been done by a number of engineers experienced in 
Russian conditions, and I anticipate that some of this 
search will result in new business. 

Dec. 1, 1912. Dec. 1, 1913- 

Lena Goldfields 3% 2 

Orsk Priority 1 % 

Kyshtim 3% 3 

Atbasar 1% • 

Spassky Hhb t2% 

Tanalyk 3 2% 

Sissert 1% 1% 

•Absorbed by Spassky. 

tOld capital, £595,330. 

tNew share capital, £950,000. 

The Indian gold mines, on the whole, have given' 
satisfactory results, and the output has been main- 
tained. The Mysore continues its run of uninter- 
rupted prosperity, which began in 1888, and the work- 

JlUHLirV 8, 19M 



bigs nt i'imh) ft vertical slinw do rigni "f exhaustion. 
Tin' yearlj i. input is maintained at about 14)500,000, 
ami the total rino> the commencement baa boon about 
♦75,000,000, of which nearly one-hali baa been dis- 
tributed in dividends. The mine baa four yeara re- 
- in hand. The Champion Beef is not the mine it 
need to be, for the grade fell away Bve yean ago, ad 
nits rich "it is still found in the deepeal 
levels, and the average lias slightly increased during 
the last Mar or two. 'I'll,- Ooregum ia in a more satis- 
faetory oondition than a year ago. Early in 1918 the 

ipmenta at the Nundydroog were bo 'lis raging 

that tlii- output was reduced, hut toward the end of the 
year an improvement took place, and the old rate of 
output was restored. At the Balaghat Bearoh is still 
being made for another shoot of ore, hut without suc- 
cess so far. Exploration of the southern continuation 
of th>> lode outside the Mysore company's ground is 
being undertaken from the 2385-ft. level of the MyBore. 
'I'll.' exploitation of this ground from the Burface many 
years ago gave indifferent results. During the year 
several cyanide and slime plants have been erected in 
the Kolar goldlield. hut as the proportion of gold not 
caught by amalgamation is small, the new plants will 
not increase the output to any important extent. It is 
worthy of record that the eost of mining has been 
greatly reduced of late years, chiefly by the introduc- 
tion of electric power instead of wood-fuel. 

As regards other Indian goldfields, the Anantapur in 
Madras has arrived at the profitable stage, for a small 
dividend has been paid by the North Anantapur com- 
pany. The developments of the adjoining Jibutil prop- 
erty are sufficiently encouraging to warrant the pro- 
vision of additional capital to provide a treatment 
plant and to continue developments on a large scale. 
The mill commenced work in November. On the Rama- 
giri block, in the same district, a promising ore-shoot 
has been disclosed, and probably a company will be 
formed to develop it. The Hutti mine in Hyderabad is 
making a good showing in depth after passing through 
a disappointing period. Here the 2140-ft. level con- 
tains a rich orebody. The Mangalore mine in the 
Raichor district of Hyderabad has proved a failure, and 
is closed. In the Shimoga district of Madras, addi- 
tional capital has been subscribed for developing the 
two mines, which are to be worked conjointly. 

In Cornwall the position of affairs in connection with 
lode-mining is far from encouraging. At Dolcoath the 
deep levels tapped by the vertical shaft are in ore of 
less than the average grade of the last few years, and 
the yield of black tin is less than it was a year ago. 
The seriousness of the outlook is recognized by the 
management, as is evinced by the fact that parallel 
lodes are now being explored. The difficulty of main- 
taining an output of profitable ore has once more been 
experienced at Cam Brea & Tincroft, and it has been 
necessary to close the Cam Brea section and devote 
sole attention to North Tincroft as the most hopeful 
ground for the discovery of future sources of supply. 
The grade of the ore at South Crofty is giving anxiety 

to the shareholderi At Baal Pool additional capital 

sen provided by Bewick, tforeing .v <'o. for the 

purpose of pushing development work. This Bra has 

also taken in hand the l'h..eni\ mines m East ( ,,rn 

wall. At the Levanl there ia lome doubt whether the 
present Company will renew the leas., for the land 

lords are Baking onerous terms ami sa\ they ha. 

i more favorable offen from another party. The 

Botallack, which was re-opened six yean ago, has 

proved a dire failure in spite .if repeated auppli 
working oapital. We may hear of its suspension at 
anj moment. The Wheal .lane, near Truro, owned 

by the Falmouth Consolidated company, his jusi been 

elosed ; three years ago Hie chairman grandiloquently 
asserted that there was Sufficient ore to keep 1000 
stamps going. The only lode mine that Can bl 
to be doing well and to have encouraging pniipoota it) 
the Grenville, though mention should not be omitted 
of the improved outlook at Wheal Kitty. If this article 

9c*. ■ or M.i-.. 


had been written several months earlier it would have 
been possible to refer to the Geevor as a bright spot, 
for ample ore reserves had been developed and a mod- 
ern dressing-plant erected involving the use of many 
new machines invented in America. But as the. board 
has made a clearance of this plant for reasons that are 
no reasons at all, it is necessary to moderate our en- 

The most prosperous company at present is the Corn- 
wall Tailings, which is making a handsome profit out 
of the old dumps at Cam Brea & Tincroft. Owing to 
the success of these operations, many promoters have 
sought similar properties. The sand on Gwithian beach 
at the mouth of the Red river, which has yielded a 
good profit on a small scale for many years, has been 
purchased by London interests and is to be worked on 
modern lines. Another similar tract on one of the 
creeks feeding Falmouth harbor is also being attacked 
on a large scale. A third is in the Helston district. In 
all these cases the material has to be pumped to re- 
grinding and concentration plant, and they are not 
in the nature of dredging projects, as might be sup- 

Much has been heard of the exploitation of radium 
ores in Cornwall during the year, and the Trenwith, 
near St. Ives, and the South Terras, at Grampound 


January 3. 1914 

Road, have both been in the limelight. The published 
statements show that radium bromide from the pitch- 
blende at Trenwith is finding a market, and the recent 
great expansion of the use of radium in surgery has 
:uany inquiries and orders. 

Various. — Om of the most important features of been : h of interest in tin mining in 

the >' States The excellent results obtained by 

the Tronoh. Gopeng. Latah. Tekka. Kinta. Pengkalen. 

formed in 1911. started its first dredge in January last, 
and has been recovering 1 lb. of concentrate or 'black 
per cubic yard. This preliminary 
work has justified the building of two more dredges, 
which win - at work. F. VT. Payne is the con- 

sulting engineer. The Siamese Tin Syndicate was 
formed in 1906 to exploit an alluvial area in the Renong 
district of Western Siam. A net profi: $22 was 

earned during the past fiscal year from a gross profit 



hy F. DUCTEXS Powx**. 

>.: '.:v . .. .-.:-. i ;-r.-.T ;."."..-.■• ::.'. —.: > .: >.u ' .-::::: 

in the state of Perak. have stimulated interest in that 
Across the border, in Siam. the Tongkah Har- 
Renoag. Malayan, and Siamese companies are 
dredging, in contrast to the sluice and elevator practice 
in Kinta. The Tronoh is the premier mine, but it has 
passed its aenith. Last year 496.496 eu. yd. was washed 
with a yield of 12 U IK black, tin per cubic yard. The 
alhivial praetiee coalman to the Kinta district is to he 
supplemented at Tronoh by the introduction of backet- 
dredging, om die suggestion of H. D. Griffiths, who has 
recently resigned as j.u > ual manager. At the Trekka 
the ground is hydraabeked, while at the Taipins. also 
belonging to the Tekka company, a BTtiaa paaqt 
dredge is used. The Malayan Tin Dredgine Co_ 

7-t: : 

- 395. This was done whh one dredge. 
have bees ordered. H. G. Scott is the manager. The 
Bmnwg Dredging Co. has made a great rtnrwim with 
:..- :: -_: - .: = -i - 1 '•". V ". r _• - .r 

about to start, and aditional ground has been acquired. 
7 : :::.- :_; —7 -"--7 - '-? - - " r.^r . :- .1 lui 
- more capital obtained. It is estimated that a 
profit of £50.000 per annum can he earned when the 
three dredges are at work. Last year 6S2J98S em. yd. 
was dredged with an average yield of 14 oa. black tin 
per yard, at a cost of 4.41d. per yard, hat the total 
east (in i lading an export doty of l.Td. per yard' was 
£. T. McCarthy and F. W. Payne are the ad- 
7. -:'.;■- : _ -:--;- : .r.-7 
hare appeared, soeh as the Ipoh and ] 

January .1. 19] I 


ting, both under good auspices <mi the whole, this 
growth oi tin' tin dredging industry in the Malay 
peninsula is likely to prove a highly raoeeasfo] phase 
of l''ur Baatern development. 

Lode mining as yet is represented only by t ho Pa- 
hang, ou the cast side of the Malay peninsula, an old 
enterprise with a chequered oareer, brightening «>f late. 
In the year ended Jnly 31, 1913, the output was 1125 
tons of blaek tin from 102,797 tons of ore, treated in a 
oil stamp mill. In addition, 115 tons of alluvial tin was 

c a r i b bs^e: -™a n 

Sr«i«nf Milts 


recovered. The maximum depth of the working is 800 
ft. Far north in the Shan States, of Burma, the 
Mawehi company is about to start its new mill, having 
a capacity of 100 tons. per day on a reserve of 107,000 
tons of ore, valuable for its tin and wolfram contents. 
The mine is young, and full of promise. Farther to- 
ward the Chinese border is the property of the Burma 
Mines, a company organized in 1906 to beneficiate the 
old slag-dumps found in the jungle, and supposed to 
have been made in the extraction of silver from a lead- 
carbonate ore. While the slag was being extracted and 
smelted (first at Mandalay and then at the mine) the 
ancient workings in the vicinity were investigated and 
explored. Recent development, by adits, has proved 
the existence of an enormous orebody, containing 23% 
lead, 26% zinc, and 25 oz. silver per ton, with traces of 
copper. Old workings indicate that this orebody is 
2500 ft. long; it has been proved underground for 750 
ft., and averages 50 ft. wide. Another lode containing 
8 to 10% copper, 10% lead, 10% zinc, and 10 oz. silver, 
from 7 to 8 ft. wide, has been discovered. According 
to late advices, it is as much as 35 ft. wide, assaying 
14% copper. Here we have two of the finest orebodies 
uncovered during the last decade. The copper ore is 
docile, while the other is intensely refractory; hence 
the exploitation of the first will furnish funds while 

experiments are made frith ■ view to treating tb 
ond. The largest shareholder la l(. Tilden Smith 
the managing direotor is n. c. Hoover. Beoantl] C. ll 
Maenutt waa appointed resident manager, 

in South America the nansoitation of the old Que 
brads oopper mine, near Iroa, in Venezuela, is inter 
eating. The tirst Company went into liquidation in 
1895. \V. A. Haywood, at one tune of the itafl of the 
old Company and known for his work at the Tennessee 
Copper, is the metallurgical advisor. A new smeller is 
ing erected. The new < lorn- 
pany, the South American Cop- 
per Syndicate, has already paid 
handsome dividends on a re- 
duced capital by making ship- 
ments of rich ore. The St. John 
del Rey in Brazil continues its 
honorable career, producing 
nearly £400,000 worth of gold 
fro in 165,000 long tons and pay- 
ing about £70,000 in dividends 
yearly. The workings are 5200 
li. vertical and 7300 ft. deep on 
the dip of the lode. Besides 
the Pa'to dredging affair, I 
may mention the Anglo-Colom- 
bian Development Co., organ- 
ized by the Consolidated Gold 
Fields to exploit platinum de- 
posits of alluvial character in 
Colombia. This is said to 
promise well. On the whole, 
the amount of British capital 
now embarked in South Ameri- 
can mining is quite out of proportion to the interest 
once taken in that sub-continent. The following quo- 
tations require no further comment : 



Cornwall Tailings ■ 




Malayan Tin 

Siamese Tin 




Champion Reef 

South American Copper Syndicate 

Apart from changes in the mines themselves, the 
year has been marked by general unrest in the ranks 
of labor, accompanied by scarcity in the supply of that 
prime instrument of exploitation. The growth of 
world-wide industry is making ever increasing de- 
mands for labor and the spread of what is called civil- 
ization tends to teach the subject races to ask for 
higher wages. Meanwhile, white labor becomes in- 
creasingly exacting. Hence trouble. To overcome this 
obstacle, the inventive genius of man must be supple- 
mented by a humane effort to alleviate the drudgery 
of toil. 


Dec. 1, 1913. 




7 ^ 


















10 U.S. 

34 %s. 




January 3, 1914 

Review of the New York Share Market 

By C. S. Bubton 

Any review of the markets for the year 1913 must 
differ in no small degree from any similar resume of 
markePfactors in years gone by. If one were sufficiently 
venturesome at this time to name the element which 
has dominated, it is doubtful if any one else could be 
found who would agree with the conclusion. There are 
now so many cross currents, so many apparently 
contradictory phases in the situation, that there are 
almost as many minds as men, the reason for such 
diversity lying in the attempt to give specific explana- 
tion for general phenomena. 

To take up first the features which appear to bear 
most directly and conclusively upon market action is 
to take a plunge into a wide field of economics. There 
is now a vast movement of readjustment making itself 
felt throughout the civilized world, and many of the 
phases about which much discussion is heard and which 
are spoken of as fundamental factors, appear, on deeper 
study, to be but parts of a vaster upheaval the end of 
which cannot as yet be comprehended. Everywhere 
there is increased governmental activity, which, re- 
gardless of opinion as to whether it is to be considered 
pernicious or not, is but an attempt upon the part of 
the masses to secure control of those functions of 
present day commercial civilization that reach the life 
of every individual. 

Workmen's compensation acts, old age pensions, in- 
surance for servants, public ownership of telegraph and 
telephone lines, and many other measures, including the 
projects for breaking up and redistributing land hold- 

ings, have kept Great Britain in a turmoil and have 
made great inroads upon her hitherto adamant ad- 
herence to the ways of her forebears. In Germany, 
along with her industrial awakening, there has come a 
movement toward so-called radicalism, that is expected 
to make itself felt unmistakably when the present 
Kaiser's sceptre shall pass to his successor. In the 
countries bordering upon the Mediterranean the strife 
has threatened to involve all of Europe, and the market 
places have shown by their stagnation, the result of 
extraordinary calls for the unproductive use of capital 
in war. Our own conditions prove that it is not to the 
turmoil of war alone that the imperative demands for 
capital are due. American enterprises, private, pub- 
lie, and quasi-public, have alike had to face bewilder- 
ingly increased costs. Cost of labor and cost of mater- 
ial have caused gross outlays to increase in greater 
ratio than the expansion of business, even though the 
latter has been making record figures in many cases. 
With an increase in gross and a decrease in net on a 
record volume of business, it is not to be wondered at 
that investment values have been far out of line, 
measured by any previously known standard. 

It is not the province of a review of the markets of 
the year to minutely describe conditions already well 
known and over much discussed, but some small 
analysis may be attempted and perhaps be considered 
not out of place. It sometimes happens that we can- 
not see the forest for the trees and in endeavoring to 
arrive at some conclusion concerning the problems now 

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rj i. 1914 



confronting m N may be that this is our trouble. VTe 
hear and read much of the land of opportunitj in « bieh 
we live, we who are fortunate enough to have been born 
in the United States, but at the Bame time, we may uot 

. or perhaps ii is better to say that oontemporane- 
iatorj doee not give full weight to the revolution 
which the development of our country lias meant to 
the whole world. V7e bave seen wave after wave of 
immigration borne to our shores, from Ireland, from 
Germany, from Sweden and Norway, today from the 

south of Europe, and from Russia; and we have 

as simil ated, with some thought perhaps as to the effect 
upon ourselves, but without much thought to the easing 
of the pressure in the congested countries from whence 

the wave was started. Ours was a land, the like of 
which no present civilization lias ever known. The 

pioneer following the Betting sun walked from day to 
day through s country where axe and rifle were all 
sufficient Nature had been prodigal and that the first 
r should be careless of the future, was inevitable. 
There was uo need to be thrifty, he could waste with 
more than abundance remaining. 

Are we not now beginning to feel the part deple- 
tion of our principal? Our great West is not as it 
was. a vast empire where there was always room for 
the man who would try. We can no longer relieve our 
own congested centres of population by the mere slogan 
that there is a quarter section of land to be had for the 
asking. AVe are beginning to feel a little pressure here 
and there, and not having been used to it, there is 
the spendthrift's unwillingness to unpleasant facts. 
With all our riches, there has come a capacity 
to enjoy and a forgetfulness of the necessity for self 
denial, and an extravagance that manifests itself in 
ways that are a little disquieting. Automobiles and 

moving picture sh itj of farm labor, the 

I farm work from the hands of owners to 

tenants, are alike the natural oonsequenc 
national disposition to plunge into our 
without stint or thoughl of tomorrow. We are be- 
ginning to (••one to the end of our days of pioni 
and in the e.,,irse of readjustment we suffer some 
pangs, our own legislative program, which need 

not be treated here in detail, must be lidered as 

only a phase of a widespread genera] condition. 

To sum up. which is a task that must he I, ft in L'reat 
part for the future when perspective shall have be- 
come fixed, we are beginning to realize that life has 
become infinitely more complicated and mankind as a 
whole is getting away from primitive conditions, 
farther away from the soil, which is our primary point 
of produei ion. Of the difficulties whieh we foresee and 
which we discus and attempt to treat specifically, of 
our problems of peace, there are few that are not 
based upon the unequal distribution of population, the 
congestion in large centres, and the abandonment of 
agriculture. There is an effort to coax the tiller back 
to the soil, but the movement can hardly be said as yet 
to have made itself felt. 

It is to such fundamental conditions as are here 
meant to he roughly outlined, that present day market 
conditions are due. The huge demands for capital 
represent increased needs due to the complication of 
urban existence. The difficulty in meeting such de- 
mands is due at least in no small degree to the fact that 
our percentage of actual producers has relatively de- 
creased and that a correspondingly larger proportion 
of both labor and capital are engaged in an endeavor 
to supply the needs of communities, rather than in the 
work of the actual production of wealth. Huge sums 









1 TOlO 



1 TO 10 

10 to 20 




20 to 30 

1 TO 10 









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January 3, 1914 

are demanded for city needs ; water works, electric 
light and power plants, urban and interurban trans- 
portation, for railway terminals. As a nation, we have 
been indulging in an era of extravagance ; we have 
been vastly increasing, multiplying our overhead ex- 
pense; and this probably has little more justification 
than the similar tendencies of the individual, who has 
wondered why he finds himself unable to maintain an 
automobile or two and increase his savings bank 
balance at the same time. 

To treat of the market itself, it almost suffices to say 
that stagnation has ruled. The happenings of the year 
were not at any time such as to induce any large public 
participation. The death of J. P. Morgan in February 
left the New York money centre without the leader to 
whom it had looked for many years, and the opening 
of the new year has not as yet revealed his successor. 
In May the St. Louis & San Francisco Railroad Co. was 
placed in the hands of the courts and the revealments 
of its inside operations have not so far been of a nature 


to reassure security holders. Later, the New Haven 
debacle furnished much argument and justification for 
those who have criticised so-called 'high finance,' and 
it left New England dazed and indignant. All through 
the year the troubles of Mexico have threatened to in- 
volve the United States and whether or not of real 
effect upon stock market movements, they have served 
continually as excuse for. or cause of, this or that pre- 
vailing market attitude. 

In the world of mines and mining, conditions have 
been peculiar. Following the era of undue and un- 
warranted speculation of some years ago, mining share 
markets throughout the East have fallen into a rut 
from which it seems almost impossible to dislodge them. 
The results achieved by the porphyry coppers, for which 
the public has shown marked favor, form an ex- 
ception ; as does also the latest -example of the public 
preference for large enterprises, the successful launch- 
ing of the Alaska Gold Mining Company. 

A very peculiar situation as to mining properties 
exists now in New York. There is an insistent demand 
for anything that is close to the point of production, 
but it is next to impossible to interest the same people 
or the public in anything that has to be classed as a 

prospect. In a way this attitude is faulty as it over- 
looks the necessity for primary development, which 
requires some capital which, while it, in the majority 
of cases will jirobably be spent without return, need 
not be relatively large. It seems to be temporarily 
forgotten that there is always the possibility of the 
development of ground that will pay many times for 
all the previous fruitless efforts and expenditures. 

In copper, the trend except toward the close of the 
year has been to give to the producer more and more 
the control of the metal market. The ravenous appetite 
of the commercial world for copper metal resulted in 
the reduction of the world's visible supply to a negligi- 
ble quantity. However, the strength of the statistical 
position became apparent only at that juncture in 
October, when the business attitude was overwhelm- 
ingly and generally one of hesitation. There was a 
marked reduction from about 17c. per pound to 14 1 /2C 
per pound notwithstanding the fact that supplies were 
smaller than at any time since the Producers' Associa- 
tion began to collect and publish figures covering pro- 
duction and consumption. A sharp reaction and higher 
prices may be anticipated if the turn of the year 
brings with it any resumption of normal activity. The 
year just closed saw a further growth of the Guggen- 
heim organization in the field of copper production. The 
recent development of the Chile Copper Co. marks ifs 
deposit as possibly the largest copper deposit in the 
world now being mined. Unofficial estimates mention 
between 200,000,000 and 300,000,000 tons of ore of more 
than 2.5% copper content. This new development of 
the Braden coupled with the possibilities of this 
Chuquieamata deposit of the Chile Copper Co. promise 
the Guggenheim group a commanding place in copper 

. Eastern markets have shown a minimum of activity 
in precious metal issues. What, trading has been done 
in Tonopah issues has been of a distinctly professional 
character with almost no interest manifested by out- 
siders. While Cobalt has surprised all those who have 
followed the history of the district and noted that it 
has maintained its production and marked another 
record for bullion output, there has been but very slight 
market interest in Cobalt shares. The Eastern markets 
remain, so far as mining shares are concerned, in a 
waiting attitude. Could there be opened a new precious 
metal district of real merit, the call for funds would 
be eagerly and generously answered. Until some such 
fortuitous discovery can be heralded, it is safe to antici- 
pate continued apathy, though at the same time the 
market for partly developed properties was never bet- 
ter, and mining activity, apart from the share markets, 
never greater. 

The details of the year's markets are perhaps suffi- 
ciently well shown in the accompaning charts. It will 
be noted that prices of shares in railroads, industrials, 
and mining companies have moved together and that 
all suffered alike a sharp decline in June and a tempor- 
ary recovery in September, and that prices in Decem- 
ber were much lower than in January. 

January 3. 191 1 



Business and Mining —A Retrospection 

Bj P. I.i sum, i. Q LBBISON 

At this season of the year when a business Mi.'iii is 
. lisp,, s.', l to review the past and take stock of achieve- 
ment many port inont thoughts ariso in the mind re- 
garding the future of the particular occupation by 
which on,'s daily bread is earned, [ndeed, this is the 
paramount question as long as life lasts, hence any 
faots regarding it which are more than commonplace, 
are certain to be of interest. 

Wo note among other things numerous communica- 
tions in the technical press asking why mining is 
languishing and whether prospecting has become a 
lost art: moreover one's mail is often not a little 
burdened with appeals for work from fellow engineers. 
It is impossible not to be impressed by the evident 
seriousness of this condition and it seems eminently 
proper and timely for us now to seek some of the causes 
that have led to it. 

Capital on the Defensive 

Statistics will probably show that on the whole min- 
ing is not decadent, quite the contrary in fact, for the 
output is greater and profits probably not less than 
last year. Conditions, however, are rapidly changing 
all over the world. The exactions of labor arc greater 
and in this country at least, the insistence of the tax 
collector is much more pronounced. Such factors bear 
with increasing weight upon the operator, especially 
the small one, and capital is put on the defensive, a 
condition which inevitably results in combination. Once 
upon a time the railroads squeezed the weak and gave 
rebates to the strong. Now it is their turn to be pun- 
ished, to the loss thousands of unfortunate stockholders 
who may have put life savings into their capital stocks, 
knowing that they are the arteries of trade and what 
hurts the transportation companies, injures the whole 
country ; hence of all classes of investment, they should 
be under normal and logical conditions, as safe and 
sound as government securities. 

Next to agriculture, mining is our second great basal 
industry ; modern civilization cannot exist for a moment 
without it. "With hydro-electric power we may mine 
and smelt our metals; we can, at a pinch, do entirely 
without fuel if we have hydro-electric power, but with- 
out metals we cannot generate and transmit this form 
of energy. In brief, we are a metal-using people and 
will revert to savagery without it. We must mine to 
get metal and mining will not cease as long as there is 
any metal to be got. This brings us to the question — 
are our mineral deposits being exhausted? The plain 
answer to the question is that they are, but also that the 
resources are so enormous and with the probability of 
much more being developed, we need have little anxiety 
on this point. 

These reflections are so self-evident they are not 

likely to bo dlBputed, but they fail to carry us very far. 

We know, or at any rate believe, something is now 
wrong with the mining industry ;is far as we engineers 
>"'<■ concer 1. What it is and what may he the out- 
look for the ensuing year an- matters which gravely 

Concern us at tin. present time. 

The profession, i mmOD with most of tl iher 

engineering pursuits, is undoubtedly over-crowded. 

The mining industry is not. and has iml been, for the 

pas ten years capable of absorbing the multitude of 

graduates from our mining schools. It is a shairii 

it is disgraceful to see line well trained young men, 

who have spent from four lo si\ years al ,,ur colleges 

eagerly offering themselves for $7."> or $100 per month 

and ready to go on such conditions to distant anil un- 
healthy countries. The man or corporation which ac- 
cepts such terms cannot be blamed, for it is simpU a 
question of supply and demand ; rover, mining coin- 
pan ies as a rule consider the com fort and health ,,1' their 
staffs, especially when abroad. 

Another factor which is serving to depress the mining 
business is to lie found in the political conditions now 
affecting Mexico. This unfortunate country is pre- 
eminently the most attractive in the world to mining 
men. and deservedly so, by virtue of its matchless 
climate, its resources, and its propinquity to the United 
States. Hundreds of American engineers are now out 
of employment by reason of these disturbances and 
there appears to be little hope for better conditions 
within the next year. 

The enormous and astonishing development of the 
oil districts in United States and .Mexico cannot fail to 
cheek the demand for coal, especially for maritime pur- 
poses. Settlement of Mexican difficulties and the rapid 
development of South American fields will permit fuel 
oil to be cheaply delivered on the Atlantic seaboard, and 
our Eastern coal operators will be forced to meet this 
formidable competition. 

The Vanishing Frontier 

With Alaska, Canada, the Central and South 
American countries undeveloped, not to mention 
Siberia, it seems unlikely any considerable slackening 
of metal mining may be anticipated due to exhaustion 
of resources. Moreover it must be evident to at least 
a few thinking and well informed mining engineers 
that some of our old districts in the United States are 
far from being exhausted, and that they will readily re- 
spond to the skill of the engineer and no longer remain 
condemned as worked out by the fiat of the so-called 
practical mining man. The danger of empiricism in 
this as in most affairs of life, is that it is always specific ; 
its value depends upon a particular condition or case, 
it is not general. The practical man is often uneducated, 



January 3,' 1914 

he knows, or can do, only a few things well, he neces- 
sarily has the limitations of ignorance and narrow- 
ness of an untrained mind. The value of education 
has never been more evident than today and perhaps 
never so inadequately rewarded, suffering by compari- 
son in this respect with the artisan, who exacts more 
pay for less good work than ever before. The question, 
therefore, naturally arises — may we not be making 
technical education too cheap? Whether we are or not, 
it is certain we have spoiled many good farmers and 
mechanics in the making of supernumerary and indif- 
ferent engineers. 

Lessons from Germany 

Americans have been accused, and to some extent 
justly, of being unphilosophical and unduly practical. 
The most philosophical people in the world are probably 
the Germans, yet no nation in modern history can show 
such matchless practical achievement as has Germany 
within the past 25 years. If we permit prejudice, of 
which we have much, to have place in or replace our 
philosophy, we are absolutely certain to find our- 
selves at a great disadvantage in competition with the 
Germans, fur we will thus discount at every turn the 
splendid technical training our educational institu- 
tions have afforded. It is to be feared we are, as a 
people, too conservative, even hide-bound and often 
niggerdly and slow in keeping abreast with modern 

In our wild scramble for wealth we are sometimes 
so illogical as to defeat our own ends and even of 
occasion, have been known to deviate from a course <>( 
business honesty and rectitude, which sooner or later 
brings a just and merited retribution. Dishonest re- 
ports and lying prospectuses were never more easily 
discredited than at present and he who uses them does 
so at his peril. 

If existing financial and business conditions have 
made legitimate mining somewhat sluggish, it has also 
put a most wholesome check upon wild-cat promotion 
and charlatanism. Sound ethics and personal character 
are as important to success as they ever were in the 
history of the world. Most of our mining periodicals 
and professional organizations today respond vigor- 
ously to these sentiments. I doubt if any satisfactory 
code of ethics can ever be devised for engineers. The 
younger men will be more influenced by what their 
elders do. than by any decalogue of don'ts. Man is a 
social animal, social ostracism punishes more effect- 
ually and keenly than the jail. If our professional 
organizations of all kinds rigorously purge their 
membership of men known to be disreputable or even 
open to that suspicion, it will be better for the country 
and for the profession. 

Moralizing is tiresome even if needed; we may take 
satisfaction, however, in the obvious fact that the 
country is as sound, healthy, and moral as it ever was, 
even it' some of our newspapers are reptilian and 
many of our so-called statesmen but ignorant boors. 
We cannot have self government and perfection, or 

even economy, for it is ever costly in money and some- 
times in self-respect. We elect our rulers from the 
most plausible talkers; indeed plausibility is their 
greatest asset and often the only gift some of our 
politicians possess. At present we are perhaps, as a 
nation, disordered but not diseased ; we have been 
getting a good many nostrums for imaginary ills. Let 
us not indulge in a foolish clamor against corpora- 
tions, for combination of capital will go where the 
individual fears to tread. All we ask is that both the 
individual and corporation get a square deal and no 
favors. But we can never hope to have it as long as we 
are content to fill big places with small men. Ordinary 
prudence forbids the placing of untried and untrained 
men in the management of a large mill or smelter. 

Business and Government 

The philosophy of government is not different from 
that of organized business, and it is beginning to be- 
come more and more evident that good business and 
good government must go hand in hand. At present it 
seems to me we are paying the penalty of indulgence 
in fads, fancies, and untried theories. Political parties 
are necessary to our form of government. The South- 
ern states adhere tenaciously to one political party 
because they must, for reasons which are no way politi- 
cal, but unfortunately the best men of that section do 
not as of old, become the leaders of this party. I dare 
say the average American cares little which of the two 
great political parties are in power, provided he gets 
good government and his country is not made the 
laughing stock of a critical world. We can stand high 
tariff, low tariff, or no tariff at all, but we cannot 
afford to make ourselves ridiculous. Mistakes of 
policy or judgment do not shake confidence as does 
folly, blatent and crass ignorance; this, at the bottom, 
is what is the matter with mining and is troubling 
the whole country. We are rapidly getting away from 
the notion that business should be detached and apart 
from government. Whether or not we are correct in 
this assumption is beside the question, the fact remains 
these two great functions of civilization are growing 
more and more interdependent' — what affects one will 
react on the other. It therefore behooves us to place 
our government in the hands of able and experienced 
men. and not to assume that people unfitted for re- 
sponsible positions in business can creditably discharge 
equally important functions in the government service. 

The Mexican Eagle Oil Co. reports that in the year 
ended on June 30 last, over 200 vessels have taken oil 
at Tuxpam. The facilities now permit the loading of a 
10,000 ton ship in 24 hours. Leases have been acquired 
on 50.000 acres of additional oil lands and 30,000 acres 
have been bought. A new field was brought in with a 
5000-bbl. well and development has been generally 
satisfactory. The profit for the year was 1*8.166.514, 
which, after allowance for depreciation and fields re. 
demption. left 1*4.615,500 to be added to the existing 
surplus of 1*631,805. 


Work of the State Geological Surveys 


Uy Fkask W. DiAVolf 

The public is appi iating more and more the Fonda- 

mental value of Boientifio work by the various state 
geological surveys. The growing need tor accurate in- 
ventoriea of natnral resources has broughl into promi- 

oei the tool thai work on the subject has I n going 

on in a quiel way for a greal many years, Intelligent 
development and conservation must, of course, be based 
on knowledge. While the function of the surveys is 
chiefly to aid the development of state mineral re- 
sources, and in some cases to investigate soils, forest, 
and highway work, nevertheless a large annual contri- 
bution is made to pure Bcience itself. 

There are 35 active state surveys, including the new 
organization created during the year in Oregon. Sev- 
eral of the surveys, however, are embarrassed from 
time to time by laek of appropriations. Thus the 
Arkansas Survey was officially inactive during 191.3. 
Altogether, the surveys expended approximately $475,- 
t and received the benefit of $140,000 additional ex- 
penditure by cooperating federal bureaus. Over 100 
scientists gave full-time service for the states and about 
."in others, besides topographers and soil experts, were 
furnished by cooperating bureaus. Thus the surveys 
have a large and cumulative influence throughout the 
country for enlightenment and for scientific develop- 
ment of natural resources. The Association of Ameri- 
can State Geologists meets each year during the Christ- 
mas holidays, and as a rule, in a spring conference at 
Washington. Beginning with 1014, field conferences 
of state geologists will probably he held, so that prob- 
lems in common can be reviewed in the field, and co- 
operation between neighboring states can be rendered 
more efficient. 

Organization and Funds 

State geological surveys and mining bureaus are 
organized in one of three ways: (1) under state uni- 
versity control, or with the survey director giving part 
of his service to the state university ; (2) under a 
commission or board, without university connections; 
(3 i under a chief appointed by the governor, or other- 
wise independent. Considering the active surveys, 16 
belong to group 1 aud have financial support averag- 
ing $7500 per annum. Group 2 includes 15 surveys, 
with annual appropriations averaging $22,300. Group 
3 includes two surveys with average funds of $5600 
per annum. Judging from the available funds, the 
most successful and active surveys are under commis- 
sions, and the directors or managers have no outside 
demands on their time. Exceptions in this group in- 
clude two such surveys with funds averaging only 
$8500 : exceptions to group 1 include three surveys 
with annual funds of $15,000 each, and one which re- 
ceives $27,500 per annum. Other factors affecting the 
strength of state surveys include the extent and variety 

of the mineral resources of the area to be studied, and 
in part, the length of time during which tlic survey 
has been in operation. Those states uiti, abundant 

mineral resoui s and important mineral in. lust lies 

either have very active surveys at present, or have had 
such service for many decades though tlic present 

organization may be poorly supported. Information re- 

garding the mineral resources of the various states can 

be obtained without cost by addressing the officer in 
charge, as shown by the following directors i 


Alabama— Geological Survey of Alabama; E. A. Smith, State 
Geologist, University. 

Arizona — Geological Survey of Arizona; Territorial Geologist, 

Arkansas — Geological Survey of Arkansas; N. F. Drake, State 
Geologist, Fayetteville. 

California — California State Mining Bureau; P. McN. Hamil- 
ton, State Mineralogist, San Francisco. 

Colorado — Colorado State Geological Survey; R. D. George, 
State Geologist, Boulder. 

Connecticut — State Geological and Natural History Survey; 
Wm. North Rice, Superintendent, Middletown. 

Florida — Florida State Geological Survey; E. H. Sellards, 
State Geologist, Tallahassee. 

Georgia — Geological Survey of Georgia; S. W. McCallie, State 
Geologist, Atlanta. 

Illinois — State Geological Survey; F. W. DeWolf, Director. 

Indiana — Department of Geology and Natural Resources; Ed- 
ward Barrett, State Geologist, Indianapolis. 

Iowa — Iowa Geological Survey; G. F. Kay, State Geologist, 
Iowa City. 

Kansas — State Geological Survey of Kansas; Erasmus 
Haworth, State Geologist, Lawrence. 

Kentucky — Kentucky Geological Survey; J. B. Hoeing, Di- 
rector, Frankfort. 

Maine — State Survey Commission; C. Vey Holman, State 
Geologist, Bangor. 

Maryland — State Geological and Economic Survey; William B. 
Clark, State Geologist, Baltimore. 

Michigan — Michigan Geological and Biological Survey; R. C. 
Allen, State Geologist, Lansing. 

Minnesota — W. H. Emmons, University of Minnesota, Min- 

Mississippi — Geologic, Economic, and Topographic Survey of 
Mississippi; E. N. Lowe, Director of the State Geological 
Survey, Jackson. 

Missouri — Bureau of Geology and Mines; H. A. Buehler, Di- 
rector, Rolla, Missouri. 

Nebraska — Nebraska Geological Survey; E. H, Barbour, State 
Geologist, Lincoln. 

New Jersey — Geological Survey of New Jersey; H. B. Kiimmel, 
State Geologist, Trenton. 

New York — Science Division (Geological Survey) of the Edu- 
cational Department; John M. Clarke, State Geologist and 
Paleontologist, State Museum, Albany. 

North Carolina — North Carolina Geological and Economic Sur- 
vey; Joseph Hyde Pratt, State Geologist, Chapel Hill. 

North Dakota — North Dakota Geological Survey; A. G. 
Leonard, State Geologist, Grand Forks. Agricultural and 



January 3, 1914 

Economic Geological Survey of North Dakota; Herbert A. 
Hard, Director, Fargo. 

Ohio — Geological Survey of Ohio; John A. Bownocker, State 
Geologist, Columbus. 

Oregon — Oregon Bureau of Mines and Geology; W. A. Parks, 
Director, Corvallis. 

Oklahoma — Oklahoma Geological Survey; D. W. Ohern, Di- 
rector, Norman. 

Pennsylvania — Topographical and Geological Survey Commis- 
sion; R. R. Hice, State Geologist, Beaver. 

Rhode Island — Natural Resources Survey of Rhode Island; 
Charles W. Brown, Superintendent, Providence. 

South Dakota — Geological Survey of South Dakota; E. C. Per- 
isho, State Geologist, Vermillion. 

Tennessee — Tennessee State Geological Survey; A. H. Purdue, 
State Geologist, Nashville. 

Vermont — Geological Survey of Vermont; George H. Perkins, 
State Geologist, Burlington. 

Virginia — State Geological Survey of Virginia; Thomas L. 
Watson. Director, Charlottesville. 

Washington — State Geological Survey of the State of Wash- 
ington; Henry Landes, State Geologist, Seattle. 

West Virginia — West Virginia Geological and Economic Sur- 
vey; I. C. White, State Geologist, Morgantown. 

Wisconsin — Wisconsin Geological and Natural History Survey: 
W. 0. Hotchkiss. State Geologist, Madison. 

Wyoming — Geological Survey of Wyoming; C. E. Jamison, 
State Geologist, Cheyenne. 

Topographic surveys were continued during 1913 in 
14 states, under cooperative agreement with the U. S. 
Geological Survey, which shares the expense. More 
than 10.000 sq. mi. was mapped as a basis for geologi- 
cal and engineering studies. A large share of attention, 
and on an average of about one-third of the geologic 
funds in the various states, are devoted to economic 
and detailed areal surveys. Most reports issued describe 
local mineral resources in such a way as to encourage 
careful investment. Important deposits of stone and 
minerals available for building, or for use in cement, 
concrete, road-ballast, or in the arts, are found in many 
states. Investigations were made and reports pub- 
lished as follows : The marbles and crystalline rocks 
of Alabama, and slates of western Pennsylvania were 
investigated ; reports on building stones of the states 
were in preparation in Minnesota, New York, and Ohio ; 
a bulletin describing the cement materials of Washing- 
ton was distributed early in the year ; a study of lime- 
stone and marl for agricultural uses in southern Geor- 
gia was in progress ; materials available in Iowa for 
road-building, and for concrete, were tested ; the lime- 
stones of Michigan were also investigated. 

Clay deposits of Colorado east of the mountains, and 
elsewhere in the vicinity of large towns, were tested 
and the results were published during the year. Clay 
materials available at coal mines were examined in 
Illinois. Practical tests of clays of Kansas were under 
way, and a stud} 7 of Minnesota brick and clay industries 
was completed. Fireclays of Pennsylvania were the 
object of special study in that state. 

The importance of lignite in those western states 
which have no adequate supply of high-grade coals, has 
recently been brought to public attention. Investiga- 
tions of the availability of lignite for gas-producer 
practice, were continued in western North Dakota and 

in South Dakota. A study of coal resources and min- 
ing practices in Illinois was continued in cooperation 
with the University and the U. S. Bureau of Mines, and 
three reports were issued, including proximate analyses 
of 350 mine samples. Several folios covering the coal 
territory were issued in cooperation with the U. S. Geo- 
logical Survey. In Iowa, a series of ultimate analyses of 
coals was completed. Tennessee coals north and south 
of the Tennessee Central Railroad were described, and 
field work was finished for a report on coals of the 
state. Surveys of the important coal fields of Wash- 
ington were continued. Nine reports for counties in 
the coal fields of West Virginia were either published 
during the year, or prepared for publication. 

The surveys made extensive examinations of de- 
veloped or prospective oil and gas fields. In California 
work was begun on a report for the entire state. In 
Illinois, a report on the southeastern fields was pub- 
lished, and three cooperative folios covering oil terri- 
tory were in preparation. Michigan issued a bulletin 
on oil and gas resources. In the Oklahoma field, four 
parties were engaged in developed or prospective oil 
and L r as territory. The detailed mapping of the 
Hominy quadrangle was completed in cooperation with 
the United States. The report on the Vinita and 
Nowata quadrangle was sent to press. In Washing- 
ton, investigations regarding oil and gas in the western 
part of the state were in progress. Six county reports 
published in West Virginia had special reference to 
the structural relations of oil and gas. A conference 
was called during the spring at Pittsburgh between 
representatives of the various state surveys, of the U. S. 
Bureau of Mines, and of operators in oil and coal fields, 
for the purpose of considering the relation of gas ex- 
ploitation to coal mine explosions. Many explosions 
have been due to leakage of natural gas into mines. As 
a result of the conference a model law providing for 
state inspection of drilling operations through workable 
coal beds, was recommended to the various legislatures. 

Ore Deposits Examined 

Surveys of the Platoro-Summitville gold district of 
Colorado were made. This is the old Summitville dis- 
trict which produced a considerable quantity of gold 
twenty years or more ago. H. B. Patton of Golden is 
directing the new work in the district. In Missouri, 
experiments on the electric potential of minerals were 
continued, and a study of the Aurora region was in 
progress. Copper prospects in Pennsylvania were in- 
vestigated. Eastern Tennessee red-iron ores were des- 
cribed in a cooperative report. A bulletin on the geology 
and ore deposits of the Covada silver and gold districts 
in Washington was issued. In Wisconsin, the orebodies 
in the lead and zinc regions were mapped; and a 
magnetic survey was begun to outline new iron deposits 
and to classify the land of the northwestern part of the 
state for taxing purposes. Detailed areal work, in- 
cluding economic geology to some extent, continued in 
most of the states. 

Although stratigraphic and paleontological studies 

January :i. L914 



do not, at tirst glaoea, appear to have great praotioal 
importanoe, they Deverthelen are neoesmry funds* 
mental studies, and they have indirect eeonomio value. 
Perhaps the moal aignifloanl move of the season was the 
'Mianiwrippian Conference ' which «as oalled in the 
Beld in Missouri. Bight states sent delegate! to the 
meeting, and the I . B. Oeologioal Survey waa repre- 
sented by 1 >;i \ i> i White, ohief geologist A oommittee 

of the state n res was appointed to direst 

interstate work, so as bo avoid ifliot sad nnneeessary 

duplication of formation names and of Held work. An- 
nua] mineral statistics were prepared in nearly all of 
the states. Bibliographies "i" great ralue to mining 
men were issued in Colorado, Iowa, New Jersey, and >" 

Washington, and studies of road, soil, ami other sub- 
jects were made in many slates. 

Zinc Ores and Metallurgy in 1913 

By K. G. Hall 

Tin- history of the zinc industry for 1913 is not pleas- 
aut writing, ami while the role of Cassandra has ever 
been a thankless one, it does not need the prevision 
of a Cassandra to predict a lean period for the ore 
producer in 1914. The year 1912 closed with a falling 
market, and a decreasing consumption. The elections 
of 1912 foreshadowed a marked change in the tariff 
conditions, especially as related to the steel business, 
and from a high point of about T'-c in October, spel- 
ter had reached a figure of 7c. early in January. From 
that point, as may be noted, the recession was gradual 
until a price of $4.90 per 100 lb. was reached in June. 
A recovery from this point was made to $5.60 per 100 
lb. by September, only to be lost again on the passing 
of the tariff bill, until December sees a price again 
below $5. The cause of these fluctuations has not been 
entirely the tariff on zinc and zinc ores, but rather the 
general business conditions. It will be noted that at 
one time the official St. Louis quotations on spelter 
wen' practically the same as those of London, even at 
» time when the duty was still l%c. per pound, and 
even today the New York price is still below the im- 
port basis, and with the spelter stocks now on hand 
and yet accumulating, there is no prospect of an ad- 
vance in the near future. The history of the iron and 
steel business has always been and always will be the 
best indication of the history of the zinc industry, and 
the past three years have afforded excellent illustra- 
tions of this characteristic. 

Notwithstanding the much decreased prices, the pro- 
duction from the Jopiin district has been about equal 
to that made in 1912. At this writing a total ship- 
ment of 'jack' of 280,000 tons and of silicate of 22,000 
tons is indicated, these about equaling the record year 
of 1912, and a much larger stock of concentrate re- 
mains in the bins than was there on January 1, 1913. 
The most potent reason for this condition, of course, 
is what one might call the inertia of mining. During 
the period of high prices vigorous prospecting was 
conducted, and many new mines were opened. These 
properties, once opened, can hardly be closed without 
great loss. A long-continued period of low prices such 
as now prevailing will, of course, forbid the opening of 
new properties, and matters will right themselves some 
day. But — and here is the discouragement of the Jop- 
iin producer — in the meantime the production of the 

Western states, due chiefly to Butte, is increasing even 
in spite of low prices, and the new tariff conditions 
have made possible importations of cheaper ore so soon 
as Mexico shall have settled to a point where mining 
can be resumed. 

Wisconsin also will show a production of close to 
72,000 tons of concentrate and carbonate. Colorado 
maintained its output close to the 1912 record, although 
some decrease will be shown in Leadville carbonate, 
as well as from smaller shippers in various parts of 
the state. Montana production is of course very much 
increased. At the first of 1913 the Butte & Superior 
company was marketing about 200 tons per day of 46 
to 48% concentrate. The production at present is re- 
ported to be close to 350 tons of over 50% grade. The 
Elm Orlu has not again entered the list of producers, 
but is expected to do so early in 1914. Utah will show 
a considerable decrease due to the almost complete sus- 
pension of shipments except those from Park City and 
the United States mill at Midvale. Nevada also will 
show a decrease, as the Good Springs properties sus- 
pended production early in the year. They since re- 
sumed to some extent, but not up to the former mark. 
Idaho continues to produce to some extent, but as the 
production is mostly made in connection with lead min- 
ing it can easily be guessed what will happen under 
a combination of 4c. lead and 5c. spelter, with a 
freight rate of $9.75 per ton to Oklahoma smelters. 
This gives them a price not much in excess of $8 per 
ton for a 40% zinc concentrate on cars in the Coeur 
d'Alene district. 

Zinc smelting in 1913 has not been productive of 
much cheer for those engaged therein. Even if the 
price of ore has fully followed down the price of spel- 
ter, it is not cheering to watch the shrinkage in the 
value of your stocks of at least $1 per ton of spelter 
per week, and this not for one period but practically 
every week averaged throughout the year. November 
1912 to November 1913 saw a drop throughout of 
$50 per ton of spelter. At the same time the margin, 
as it is roughly figured on Jopiin district ores, faded 
away from about $18 in the latter end of 1912 to $10 
in December 1913 and at times during 1913, it was 
even smaller than that. When it is remembered that 
the works cost to the smelter is generally figured at 
about $10, it will be easily figured that the most prob- 



January 3. 1914 










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ST LOU/5 ^'ft/CS /' 

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lo. voonPric 




able dividends of 1913 will be 'Irish' ones, or at best 
of the New Haven' variety. 

The year started with a smelting capacity active in 
the United States of about 1000 tons per day, and the 
figures published at midyear by the U. S. Geological 
Survey showed 180.000 tons produced. As there has 
been no appreciable decline in production since that 
time, it is probable that the total production for the 
year will be in the neighborhood of 350,000 tons as 
against a production from all sources in 1912 of 338.- 
806 tons. But the stocks of metal on hand during the 
first half of the year had enormously increased, and 
it is probable that the stock remaining in the hands of 
the producers alone on December 31. 1913. will be well 
in advance of 50.000 tons, indicating a consumption 
of somewhere in the neighborhood of 300,000 tons, as 
against 340,341 in 1912. At this writing it is impos- 
sible to give these figures with any degree of accuracy. 

There have been no advances in the metallurgy of 
zinc in 1913 as relates to the practical operation of 
smelting w r orks unless an enforced economy can be 
considered an advance. Much experimenting was done 
in electro-thermal smelting, and one experimenter has 
recently announced his intention of carrying on his 
work to a commercial basis in the near future. I 
understand also that work carried out by others gives 
promise of commercial results in the future, but up to 
today the amount of data published by anyone is in- 
sufficient on which to base commercial calculations. 

The only new construction initiated during the year 
was the plant of the American Metal Co. at Burgetts- 
town near Pittsburgh. Pennsylvania. The plant is not 
yet ready for operation. It is reported that the New 

Jersey Zinc Co. interests will in the near future start 
const ruction of a plant at Martins Perry, Ohio. 

The effect of the change of duty on the future of 
the zinc industry is complicated by many factors. There 
is no doubt that under normal trade conditions in 
this country and Mexico the present scale of duties on 
ores and metal would work to the advantage of the 
smelter. Figuring old and new schedules on the basis 
of a 40% ore and a normal recovery of 640 lb. of metal 
therefrom, yields the following: 

Old duty lc. per lb. on zinc in ore $S.OO 

Old duty X%C. per lb. on metal imported 640 lb 8.80 

Protection for smelter per ton ore $0.80 

New duty 10% of $14 for. 40% at border $1.40 

New duty 15% on metal imported, value 4V4c. London, 

640 lb 4.10 

Protection for smelter per ton ore when metal is 4%c. in 

Europe, 5c. in St. Louis $2.70 

This makes a fair showing for the smelter, and one 
perhaps hardly intended by the tariff makers, but for 
the ore producer of the future the outlook is not so en- 
couraging. When during the making of the Payne 
tariff bill, prayers were offered in the churches of 
Joplin for an extra heavy duty on ore. some profane 
Democrats were observed to scoff, but the tariff was 
certainly put high enough to satisfy any reasonable ore 
producer. Parties change and methods of making 
tariffs with them, but I am quite sure that the zinc ore 
producers and all good Republicans will agree with 
me that it is self evident that Mr. Underwood did not 
get his inspiration for the zinc ore tariff from the same 
source as did Mr. Payne. 

Jammr\ i, 191 t 


Gold and Tin Dredging in 1913 

Bj Cbabi bg -i \m\ 

Tin- gold dredging industry lias had a quiel year; practised bj the Yukon Gold Co., thus permittii 

there baa been no decided advance in methods em- much lower operating coat. Thia method of stripping 

ployed, and tow new dredgea have been built, though a and sun thawing 1 believe did no1 prove satisfactory 

number of investigations of suppoaed dredging areas when tried by the Yukon Gold Co., except in in Aral 

were carried on in different parts of the world. There experiments. In actual practice il was found thai steam 

has, on the other hand, been a decrease in the total num- thawing was n ssary ami during 1912 al t i 

her of dredges operating as compared to 1912 and the of the ground handled by the Yukon Gold Co. 'a dredgea 

outlook in known dredging fields is nol particularly near Dawson bad to be thawed; the thawing coal ac- 

brighl for the future excepting perhaps in the far north counts for abort half the coal of operations, 

and some in South American countries. In the Yukon Several extensive examinations were carried on in 

the new In' ft. dredge of the Canadian Klondyke Co., Russia and Siberia, but from what information I have, 

built by the Marion Steam Shovel Co., commenced with the exception of a dredge fur the Uodaibo district, 

operations and the four dredges of that Company are all of these investigations of supposed dredging ground 

est iniated to have made a profit over operating expenses resulted unfavorably. It would semi that there is a 

of approximately $750,000 for 1913. The North West field in Siberia and in Russia for small dredges of the 

Corporation was formed during the year to acquire A. fume type as used in Alaska if owners of some of the 

X. ('. Treadgold's holdings in the (iranville Company properties in question could be dealt with on a sane 

and other claims and some new dredges will probably basis, and I believe that some of the dredges will uu- 

be ordered in 1914. The Granville is the holding com- doubtedly be tried iu the future. 

pany controlling 75% of the Xorth West Corporation The Pokrovsky dredge of the Orsk company, which 

and 50% of the Canadian Klondyke Mining Company, was remodeled from the stacker scow formerly operated, 

The Yukon Gold Co. has dismantled two dredges which started work during the year and reports a large in- 

were operating near Dawson, and will move the crease in yardage as compared to the former methods, 

machinery to the Iditarod. A small dredge ordered During 1912 the Kolchan dredge handled 382,550 yd. 

for onprospected ground in the Kotzebue district, with an average recovery of 32.5 cents. The total 

Seward Peninsula, has also been sent to the Iditarod to operating costs of the dredge figured from the annual 

be constructed next year. report of the Company are approximately as follows: 

In the Seward Peninsula the dredges in general have 

. , , c , ., ■. c . , Cost on Kolchan Dredge, 1912 
not had a successful year, the scarcity of water during 

"i. 11 n Cents per 

the year and an early freeze up made a short season tor cu d 

most of the boats. Some areas, on which boats were Operating 4.09 

built last year following the too frequent Alaskan Power plant 3.8 

practice of building a dredge before prospecting the Winter up-keep 2.37 

, - , . , ~ ■ ,, .. Administration (management, etc.) 8.37 

ground, were found to have an insufficient gold content ' 

to pay operating expenses. Other dredges encountered 18 63 

difficult operating conditions, such as frozen ground, Royalty 6.3 

large boulders, etc., which had not been clearly defined Depreciation, London and general expenses, interest, etc.. 10.4 
or realized before. A few dredges, mostly of the flume 
type, and some in the Council district were operated 

successfully. There is a future for the flume type of To obtain the figures of royalty, depreciation, etc., I 
dredge in Alaska and elsewhere if it is first properly have divided the totals as shown in the report by the 
determined that conditions are suitable for dredging total yardage handled. The yield of gold for August, 
and that there is a sufficient gold content to make the 1913, from both dredges is given at £10,343 and the total 
enterprise a financial success. Dredges cannot be moved yardage as 116,000 as against 62.000 in July and 
as easily as chessmen and some idea of the gold content 41,600 in June. This indicates the efficiency of the 
and working conditions to be encountered should be Pokrovsky dredge. The next annual report of the Corn- 
known before building a dredge, even an inexpensive pany will be awaited with interest as a real profit over 
one, on the haphazard chance that the ground might expenses is looked for. 

prove good. In other words prospecting with a dredge In South America investigations were carried on in 

is neither good engineering nor good business. Peru, Brazil, British Guiana, and Colombia. In the first 

It is said that the investigations of the Canadian two countries examinations resulted unfavorably. In 

Klondyke Co. on the Yukon have shown that after strip- British Guiana a new dredge is to be built by the 

ping the vegetation and top soil the underlying frozen Minnehaha company already operating one dredge on 

gravel will be thawed sufficiently by the sun to permit the Potero river, also the Guiana Dredging Co. on the 

of dredging without thawing by steam points as Konowarook reports a successful year and another 10% 



January 3, 1914 

dividend making 62% since the Company started 
operating in 1907. It is stated that this Company 
handles ground at a cost of 10c. per yard but as no 
figures of yardage are given in the annual report this is 
probably an estimation only. In Colombia a number of 
investigations were carried on, one with considerable 
preliminary advertisement but so far no new dredging 
areas have been found and no new gold dredges have 
been ordered. Considerable prospecting work will be 
done in Colombia during 1914 by the Pato, Oroville. and 
other interests. The investigations of the American 
Goldfields Development Co. to the south of the San Juan 
river on the west coast have resulted in a dredge being 
ordered for 1914 to recover the platinum and gold 
shown by prospecting. 

Fraser & Chalmers is building a 5-ft. open-connected 
dredge for the Servia and if the results prove as antici- 
pated other dredges will probably be built in the same 

In the Far East 

In the Philippines the results from Guamos dredge 
during the first four months of the year gave considera- 
ble satisfaction to the shareholders and other dredging 
men interested in the country. The latest reports, how- 
ever, are that the ground proved deeper than expected, 
and that the digging ladder could not reach bedrock 
and consequently there was a considerable falling off 
in output. This caused a small panic among the share- 
holders. Late papers from the Islands talk of an in- 
vestigation. It seems, however, that an extension on 
the digging ladder would be more to the point. I have 
been informed by the Xew York Engineering Co. which 
built this dredge that an extension to the digging lad- 
der, was contemplated at the time of construction, to 
be put on when necessary. The 5-ft. dredge being built 
by the Yuba Construction Co. for the Philippines is 
fast nearing completion, and will be operating in 
December. The dredge for the Andrada Company in 
Portuguese East Africa was expected to be finished in 
November. This being built by the Bucyrus Company, 
under charge of T. C. Nicolson. 

In West Africa the Offin River Gold Estates, which 
was formed in 1900 to acquire dredging rights on the 
Offin river, has had a continuous production of gold 
since 1904 but no profit is yet available to shareholders. 
The bullion recovered to the end of 1912 has been £186,- 
003, about all of which has been swallowed by expenses. 
The Ashanti dredges are working under tributers. the 
operations of the Company being unsuccessful and un- 
favorable news is reported from the Ancobra dredging 
operations. Dredging in Africa has not been a success, 
due partly to building dredges unsuited to conditions 
of operations but mostly to poor advice when commenc- 
ing operations. Had dredges properly designed to meet 
working conditions been built when the companies first 
started, and in some cases been properly handled after- 
ward, a different tale might have been told to the 

Dredging in Spain has proved a failure and work has 

been suspended pending a search for the 'pay channel,' 
which should have been done a little earlier. From 
Alaska to Spain is quite a leap but the same methods 
seem occasionally to be followed in both these countries 
as well as in others. 

Some rich gravel is reported to have been found in 
San Domingo and if the values can be confirmed a new 
dredging area will be open to exploitation. 

In the United States little of interest has occurred in 
dredging. There has been little new work in California, 
a number of boats have exhausted their holdings and 
one has been moved to other areas. One new dredge is 
reported, that of the Yukon Gold Co. near Auburn, the 
machinery of which was taken from an Oroville dredge 
which had been shut down. The Yuba Gold Fields had 
a successful year during 1912 and operations for 1913 
are on the same order. The big all steel 14-cu. ft. 
dredge commenced work late in the year. The Natomas 
company has also had a fair year in its dredging 
operations and has overhauled several of its dredges. 
A new dredge was built by the Yuba Consolidated Co. 
for the Pabst interests near Salmon, Idaho, and the big 
15-ft. dredge built by the same Company near Idaho 
City has been doing excellent work. A new dredge is 
reported for Gunnison county, Colorado. In Oregon 
the Powder River dredge is said to have done well and 
it is reported that a 3-ft. dredge has been ordered by 
the (iold Center Dredging Co.. about 8 miles from 
Sumpter, Baker county. 

Tin Dredging 

While gold dredging has not shown much activity 
there has been a rapid progress in tin dredging opera- 
tions and no review of dredging would be complete 
without some reference to the work done and the suc- 
cess made by the tin dredges. That tin dredging is 
widespread is learned by operations in the Malayan 
Peninsula the chief field for tin production. Nigeria 
where two dredges have been built during 1913, Alaska 
where the York dredge has been operating for three 
seasons, and in Portugal where a new dredge is being 
built which will commence operations in 1914. Among 
the companies which have ordered new dredges the 
Renong company in the Siam Eastern states operating 
one Werf Conrad dredge has ordered two more ; the 
Tongkah Harbour Dredging Co. operating five Simon 
dredges has ordered a sixth ; the Siamese Tin Dredging 
Co. has two new 14-cu. ft. Lobnitz dredges designed by 
Cutten Bros. ; Fraser & Chalmers is building one for 
the Kanmning company in the Malay States: Arthur 
Brown is building two designed by Payne & Co. for 
the Malayan Tin Dredging Co. ; two Werf Conrad 
dredges were sent to Nigeria ; and Fraser & Chalmers 
has shipped a dredge which is being erected near Bel- 
monte, Portugal. This latter is of interest as it is the 
first dredge of strictly California type to be built for 
tin dredging in Europe. It will have a close-connected 
bucket line of 4-ft. buckets, a steel hull, and will have 
a horizontal belt conveyor and be operated on spuds. 
The machinery will be driven by electricity. The boat 

January 3, 1!»1» 



was designed by II C. Peakeofthe Onion Construction 

Oo for B .1 !>■• Sabla. 

The pump dredge has been successfull] oaed for tin 
in the Malayan 8tatea and elsewhere and for a time 
two of these plants were operated in Cornwall. The 
high operating c,.st militates against tln-ir being 
adopted on areas suitable for dredging, or on areas 
unsuitable for dredging but having a 1"» tin content. 
In Cornwall the eosl averaged from 24 to 80o. per yard, 

and iii the Malayan states a rding to Alexander 

Colledge" abonl 25c. per cu. yd. Though under ex- 
tremely favorable conditions he figured it should be 

done for IS ..f tin dredging like eosta <if gold 

dredging, an sometimes a matter of book-keeping and 
sometimes dne to an overeetimation of the yardage 
handled. The man with the most vivid imagination can 

thus ni. tain the lowest operating cost per cubic yard. 
In the Malay Peninsula it is generally accepted thai 

dredging oosta average fr 9 to 10c. per yard. I have 

stat. 'incuts of '-..sis under these figures but it is not 
Btated how yardage is measured. For myself I prefer 
tn figure on a basis of 10c. though a company operating 
a Dumber of dredges under favorable conditions should 
do better than that.t 

Recent Changes in Iron and Steel Manufacture 

By Hkadley Stouohton 

Electric Smelting 

There is but little recent advance of an industrial 
nature in the electric processes, and this applies espec- 
ially to the electric smelting of iron ore. which does not 
seem to progress as rapidly as the advocates of the 
process and the theoretical calculations would lead 
us to expect. The electric steel furnaces, however, have 
increased rapidly in number. There are now nineteen 
in the United States, and commercial success seems to 
follow where electricity can be obtained at a low 
price. A number of improvements of minor nature 
have been made in steel-casting plants, and several new 
furnaces have been developed without any one of them 
coming specially to the front. The principal use of 
electricity in the manufacture of steel is in super-re- 
fining the product of the open-hearth or Bessemer 
furnace. The melting of scrap is also successful where 
electricity can be procured at a very low price, and 
where a good price can be obtained for castings of 
unusual quality. The melting of alloys to be used in 
open-hearth furnaces is also a successful electrical pro- 
cess, because of the possibility of melting without 
oxidation and waste of the costly alloys, such as 
manganese, chromium, etc. The refining of pig iron to 
steel is a process too costly to be generally applied on 
an industrial scale, but the melting of pig iron in the 
electric furnace for the manufacture of iron castings 
is said to be highly successful from the standpoint of 
the quality of the product. A new patented refractory 
material, consisting of boron nitride, will have import- 
ant usefulness in electric furnaces if the claims of its 
inventor as to its fusibility and chemical inertness are 
borne out by practice. 

Furnace Changes 

A new furnace, having some of the characteristics of 
an electric furnace, a Bessemer converter and an open- 
hearth furnace, has been put in operation in Maryland, 
but has not been tried long enough to prove the in- 
dustrial value of the apparatus. The Stock oil-fired 

'The Mining Magazine, July, 1913. 

converter is a combination of the ordinary sideblow 
steel-casting converter and the revcrberatory oil fur- 
nace for melting iron. 

There is a tendency at the present time to return to 
the tilting type of open-hearth furnace as compared 
with the stationary type, on the ground of greater con- 
venience, notwithstanding the heavy cost of repairs 
because of the strain in the brick-work during the tilt- 
ing. A recent development in the heating of open- 
hearth furnaces is the use of blast-furnace gas mixed 
with coke oven gas. A process with future industrial 
possibilities involves the following principles: By 
means of carbon monoxide gas it is possible almost 
completely to reduce iron ore and produce a somewhat 
impure form of iron sponge, without the use of a blast- 
furnace, the resulting iron sponge can be melted and 
purified in the open-hearth furnace and thus produce 
steel from iron ore in a two-step process similar to the 
prevailing commercial process for steel manufacture, 
except that it is not necessary to use coke or other 
solid fuel. 

The Roe mechanical puddling furnace, which was 
developed several years ago, is being tried on an in- 
dustrial scale and apparently with satisfaction to its 

Fuel Problems 

The industrial use of oxygen for enriching the blast 
driven into the iron blast-furnace has been increasing 
so fast, and the price of oxygen is so much reduced, that 
it would seem to offer important possibilities to 
metallurgists interested in pyritic smelting of copper 
ores and the bessemerizing of copper, because of the 
valuable possibilities for abundantly and rapidly in- 
creasing the temperature of the operation without at 
the same time endangering the reduction of iron. 

The increase in the price of fuel oil in the eastern 
part of the United States has caused a great exten- 
sion in the use of pulverized coal for heating, melting, 
and annealing. The use of pulverized coal enables the 

tA further review by states and districts will be printed 



January 3, 1914 

engineer to control with great accuracy and facility the 
temperature and the composition of the flame; it gives 
a higher temperature than can be obtained with oil, and 
avoids the difficulty of deposition of graphite and soot, 
without at the same time requiring preheated air or 
too oxidizing an atmosphere in the furnace. Pulverized 
coal lias, however, the disadvantage of being very 
severe upon the brickwork of the furnace, although 
] inch progress has recently been made in this respect. 

Recent investigations into the heat lost from cupolas 
have shown the possibility of melting iron with a 
smaller proportion of coke than has been customary. A 
process has been announced for desulphurizing iron by 
blowing air through the bath of the liquid metal in 
such a way as to cause the manganese sulphide to rise 
to the surface, but without oxidizing the silicon and 
carbon and without increasing the temperature of the 
metal, as is done in the blowing of the ordinary 
Bessemer process. Steel borings and turnings have been 
melted in the cupola, without the ordinary briquetting 
or the canning processes, by blowing the fine particles 
in through the tuyeres with the blast. A process has 
also been announced from Sweden for the dephosphori- 
zation of iron by oxidation with air at a low tempera- 
ture. The details of its commercial possibilities are not 
yet known. 

Research in Steel and Iron 

The tremendous industrial importance of the critical 
points of steel for all those interested in annealing or 
tempering steel is now well recognized. During 1913 
a new method has been developed for the determination 
of the A, and A,, points, and progress has been made 
in the elucidation of the mysterious hardness of steel 
by researches upon the properties of the allotropic 
modifications of iron. 

A very important investigation by J. E. Johnson, Jr., 
was published in 1913 upon the 'Effect of Carbon on the 
Quality of Cast Iron,' which proved the special influence 
of the eutectic ratio upon the properties of this metal. 

One of the most notable advances of the year has been 
the increased attention given to the ingot-forming stage 
of the steel-making processes, and the steps that are 
now being taken for insuring the production of sound 
ingots. Perhaps the greatest of all these steps has been 
the very efficient method of supervision of the process 
of manufacture, which is carried on and recorded by 
inspectors acting on behalf of the purchaser in the 
works of the manufacturer. Several important pro- 
cesses for the elimination of pipes from the ingots, by 
causing the upper portion to cool more slowly than the 
lower and thus draw the shrinkage cavity nearer the 
top of the ingot, have been described and introduced. 

The diffusion of hydrogen ga's through steel at a high 
temperature has resulted in the removal of some sul- 
phur, phosphorous, and carbon in the form of hydrites 
without any harmful absorption of the hydrogen by 
the metal. An interesting study of the limit of the 
amount of oxygen absorbed by molten iron disclosed 
the wholly unexpected result that not more than 

0.074% could be absorbed. The harmful influence of 
oxygen on iron and steel has made a good, rapid method 
for the determination of this element of great value. 
Much research has been carried on during 1913 to this 
end. and although full success cannot yet be claimed, 
the end is nearer than ever before. Progress has also 
been made in the development of a rapid method for 
the determination of nitrogen in steel, and evidence 
has been obtained which further indicates the harmful 
effect of this element on the quality of the metal. This 
has long been a disputed question. 

Alloy Steels 

Manganese steel, which is very extensively used for 
parts of crushing machinery and other apparatus which 
is subjected to great wear, is now commonly forged 
both hot and cold. It has recently been shown that it 
can be made either non-magnetic or magnetic, and that 
it has the great peculiarity of exhibiting changes in 
structure that do not seem to be related to critical 
points in its heating and cooling curves. Mayari cast 
iron and Mayari steel are natural alloys of iron, nickel, 
and chromium which can be made from some of the ores 
of Cuba and some of the ores of Greece without the 
addition of any alloying materials. They possess greater 
strength, hardness and durability than does ordinary 
iron and steel without the nickel and chromium, and are 
coming into extensive use in engineering. Cobalt is one 
of the latest additions to steel and is said to give greatly 
increased durability, especially in high-speed steels. 
Copper steel, containing from 0.1 to 0.5% copper, has 
been experimented with by many investigators in re- 
cent years in their search for a material which will give 
extra resistance to corrosion and durability against 
wear, such as is needed for railroad rails, for example. 

Iron Ore Deposits 

The iron ore deposits of Texas, Mexico, Central and 
South America have been developed to a very great 
extent and have attracted much attention in recent 
years. One of the largest of the eastern steel plants has 
acquired great holdings in Chile, and arrangements are 
being perfected for marketing Brazilian ores on a large 
scale. The opening of the Panama canal will, no doubt, 
bring the great deposits known to exist south of the 
Equator into still further prominence. 

Colorado mines produced in the eleven months of 
1913. with an estimate for December, according to 
Charles W. Henderson, of the U. S. Geological Survey, 
$18,395,000 in gold, 9,150,000 oz. of silver, 85.500,000 
lb. of lead, 7,634,000 lb. of copper, and 129,680.000 lb. 
of zinc, with a total value of $36,200,000, compared 
with $37,320,996 in 1912. This shows a decrease of 
$200,000 in gold, an increase of 900,000 oz. of silver, 
an increase of 10,300.000 lb. of lead, an increase of 
500,000 lb. of copper, and a decrease of 2.540,000 lb. 
of zinc. The heaviest decrease in value was $1,732,000 
for zinc, and there were increases of $440,000 for sil- 
ver and $377,000 for lead. 

■human t. 1914 

MINING AND m II M ll K |'|<l » 

I : 


Mining Methods and Practice 

By E. II. Leslie 

Reviewing this broad subjecl in the fewest possible 
words, it may be said that the effort is everywhere 
tn reduce rusts by increasing the scale of operations. 
Results on the Rand, where large capital expenditure 
has been called for, have not been altogether happy, 
bat in general the movement is making possible the 
working of deposits lower and lower in grade. Lake 
Superior mines have pointed the way in open-pit work 
and in caving methods, and central electric stations 
are everywhere reducing power costs. Gas and oil- 
engines are making constant inroads on the field of 
steam, but the time-honored Corliss is still far from 
being driven from the field. Improved efficiency is 
being sought in every department. In underground 
work the one-man stoping drill has come to stay. In 
the Lake Superior copper mines it has reduced the 
stoping cost from 50 to 15 cents and increased the 
tonnage broken from 12 to 30. The motorman is 
replacing the 'mule-skinner': crushing and sorting 
underground is finding favor: use of eouveyor belts 
is increasing; grouting systems for reducing pump- 
ing charges are coming to be recognized; loading 
maehines are being tried ; and there is a distinct 
tendency toward making repairs to drills and pumps, 
and conducting drill sharpening, crushing, and sort- 
ing underground. The chief difficulty in the latter 
has been the outlay for separate equipment on each 
level, but by centring the work this is being met. 
Ventilation, of course, must be provided, but this is 
not proving difficult in practice. The efficiency of 
drills has been much studied at the North Star in Cali- 
fornia during the past year, and a rock-drill testing 
machine, 1 which gives promise of great savings, has 
been invented. Underground ore-crushing is now past 
the experimental stage and has been found to be espe- 

I'Rock-Drill Testing at the North Star,' by Robert H. Bed- 
ford and William Hague, Mining and Scientific Press, August 
2, 1913. 

dally advantageous where 'bulldozing' and under- 
ground sorting are necessary. The jaw-crusher re- 
cently installed on the 14th level of the Witwaters- 
rand Gold Mining Co.'s property is used to crush the 
large rocks formerly broken by hand, and the dis- 
charge from crusher is sent direct to the shaft bins. 
At the Round Mountain Mining Co.'s property in 
Nevada during the year one underground crusher 
broke 22,688 tons of ore, of which 16,306 tons was 
rejected as waste and left underground, and another 
crushed 56,188 tons, of which 40,589 tons was rejected. 
The cost of mining this material is from $0.80 to $1 
per ton, while the crushing, screening, and transpor- 
tation, including all repairs and renewals, amounted 
to from 5 to 6c. per ton. The often advanced objec- 
tion, the supposed bad effect upon the mine atmos- 
phere, is not borne out in practice. At the Knight 
property on the Rand the crusher station is surround- 
ed with atomizers and the amount of dust created is 
exceedingly small. 

Mining Machines 

The application of mining machines to metal mines 
is one of the latest developments. In the mining of 
coal, which, by the way, forms a subject worthy of 
the attention of the metal miner, mining machines 
have made possible the immense tonnages and rapid 
development w r hich is characteristic of that industry. 
Recently they have been introduced on the Mesabi 
iron range, 2 where the influx of miners has not kept 
pace with the demand for increased output. At the 
Harold mine, in the Hibbing district, a pick machine 
is being successfully used in soft ground. Under the 
old method the miners drilled a round of 3 to 5 holes 
in the breast, each hole about 5 ft. in depth. The 
upper holes were usually fired first and the bottom 

2H. E. Martin and W. H. Kaiser, Trans. Lake Superior 
Mining Institute. 



January 3, 1914 

holes after the broken ground had been removed. The 
amount of dynamite depended upon conditions, and 
varied from 7% to 15 lb. After the upper holes were 
fired the miners secured the back by poling from the 
last set of timber into the breast. When the broken 
ore had been removed, the miners trimmed the breast, 
and sides, and the ground was ready for timber. 
When doing the work with machines, the number of 
men required per crew is 2 machine men, 3 miners, 
and 6 shovelers. The minimum number of working 
places or rooms required for one machine has been 
found to be five, though a larger number will insure 
fewer delays and make for higher efficiency. The log 
of one round of operations is as follows : The ground 
is first undercut with the puncher to a depth of about 
five feet, the cut extending from the solid rib to with- 
in six inches or so of the opposite side, thus leaving 
a small pillar six inches wide and the full length of 
the 'set'; the object in leaving the pillar being to 
prevent premature caving. Two holes are then drilled 
with the air augur about one foot from the solid rib 
and spaced about two and six feet, respectively, from 
the back. Sometimes four holes are necessary. Two 
short holes are drilled in the small pillar supporting 
the ground, shoveling boards are placed in the cut, 
and under the ground to be broken, and the holes un- 
loaded and fired. The back is then secured with poles 
and the room is ready to be cleaned. After the broken 
ore has been removed, the miners spare up the set, 
place the timber, and another cycle of operation is 
started. The average time for under-cutting one block 
of ground is 59 minutes, moving and setting the ma- 
chine 26 minutes, drilling with the air augur 2.8 min- 
utes per foot. 

Aside from reducing the cost of production, the 
machine requires but one-half of the labor to be skilled 
miners, only one-half the amount of dynamite is re- 
quired, there is less liability of the posts being blasted 
out, and there is always a smooth surface from which 
to shovel. The rooms worked by machine must be easy 
of access from one to another. Their height should 
not be less than seven or eight feet, and no bottom 
stoping should be necessary. In other words, the ma- 
chines are applicable to slicing and square-set meth- 
ods. While the mining conditions have "not been ideal 
for the use of the machine, after five weeks' trial it 
was found that the average number of tons per man 
was 12, which is considerably above the average in 
most of the underground mines on the Mesabi. From 
the results obtained it is evident that the machines 
have found a place in iron mining. 

Mining Methods at Joplin 

At the present time over 50% of the concentrate 
produced in the Joplin district is from 'sheet ground' 
properties, that being a local name for a blanket de- 
posit. The blanket from which the bulk of the out- 
put of the district is obtained varies from 8 to 20 
ft. in thickness and lies at a depth of from 100 to 
200 ft. As a rule, the ore-bearing ground lies under 

a heavy limestone, which is supported by pillars of 
from 20 to 40 ft. in diameter, about 50 ft. apart. The 
ore occurs in a formation known as the Grand Falls 
chert, which ^s extremely hard, and is broken with 
air-drills and 40% dynamite by underhand stoping. 
The ore is shoveled from the faces of the stopes into 
tubs and run to the circular shaft on low platform 
cars. Another type of deposit is known as hard dis- 
seminated ground. In these deposits a good back 
is usually had and the mining is practically the same 
as in sheet ground with the exception that rooms are 
often cut out 30 to 40 ft. wide, 50 to 150 ft. long, 
and 20 to 100 ft. high. The third class of deposit is 
that which is known as 'soft' ground. In this form 
of deposit the roof is supported by timbers. The usual 
method of timbering consists of a cap and posts with 
collar braces, each set being tied to the one behind. 
It often happens that spiling boards are necessary, 
and lagging is used on the sides of the drifts. The 
average cost of mining in this district for all types of 
mines including sheet and soft ground is about $1 per 
ton. This cost does not include amortization. Methods 
of mining in the Joplin district have been briefly de- 
scribed within the year by Clarence A. Wright in one 
of the series of technical papers published by the U. S. 
Bureau of Mines. 

Flat River 

The methods of mining used in the lead belt of 
southeastern Missouri are similar in some particulars 
to those at Joplin. underhand stoping and pillars being 
used. Operations in general, however, are on a much 
larger scale, and the equipment is of a more perma- 
nent nature. Prospecting is done largely by diamond- 
drills in the Flat River district, and mules and elec- 
tricity are employed for underground tramming. The 
subject has been fully treated recently by H. A. Guess 3 
in a most interesting and valuable paper. 

In both districts the pumping charge constitutes one 
of the big items of expense, and it seems probable that 
larger use could be made of the method of plugging 
water channels. The combination of wedging and 
grouting introduced by E. B. Kirby at the Federal 
Lead Co.'s property at Flat River, some years ago, 
proved a simple and efficient method of sealing and 
saved a large amount of pumping. By this method 
the channel is stopped with wooden or iron wedges, 
a pipe being first inserted into the channel through 
which the grouting is pumped. Pumping operations 
are continued until the flow of water from the channel 
has ceased, when the pipe is capped and the operation 
is completed. For filling the channel, either clay, 
sawdust, or a fine concrete may be used. When earth 
is used, a settling device in the form of a three-com- 
partment classifier is employed. Only the finer mate- 
rial, that collected in the last compartment, is used 
for grouting purposes. George S. Rice has called at- 

3'Mining and Mining Methods in the Southeast Missouri 
Disseminated-Lead District,' H. A. Guess, Trans. Amer. Inst. 
Min. Eng., December 1913. 

.Ittniiiir.s !. 1914 


i • 

tention' to an application of the method to preventing 
rock >lu!.-s. and Pranoia Donaldaon haa diaeuaaed the 
matter In meetion with shaft-sinking. 

Square-Set Stoping 

'I'll.- square-Bel method of stoping, which was the 

si. in. lard praotioe for a number of years, has bi me 

modified and ;i combination with the Ailing system is 
being widely adopted. The Snow-Storm property at 
Larson, Idaho, presents an example of square Bel and 
till system. At this property the vein outeropa near 
the top of the mountain and dips al an angle of 65 . 
It is opened by four cross-mil adits al depths of 100, 
200, 1100, and 1600 ft. vertically below the outcrop. 
Rfining at present is being conducted through the 

llOO-ft adit, which is about 1800 ft. Ions.'. The adits 

are connected by raises in the vein and drifts are 

made in tl -.- at approximately 100-ft. intervals. 

The stopes extend from one level to the level above. 
A bach is left beneath each level until the ore is 
mined. The stopes are filled with waste material ob- 
tained from underground sorting and an open-cut. The 
sets are ti ft. square and 8 ft. high. A plank ore-chute, 
timber chute, and man-way are carried up about every 
fifth set. Temporary incline chutes are put in when 
necessary. The ore is trammed by hand on the levels 
and dropped through rock raises to the adit-level, 
where it is trammed by horses to the portal of the adit 
and thence by aerial tramway to the mill at Larson. 
Ingersoll-Rand 3 J ,4 and 3"'s-in. piston drills are used 
for driving, Waugh hammer-drills for raises and stopes, 
and Ingersoll-Rand jack-hammer drills for sinking. The 
cost of production for the year ended July 1, 1913, 
was $1,444 for shipping ore and .+1.474 for milling ore. 
At Victor and Cripple Creek the general method of 
mining is by stulled stopes. varied occasionally by 
filled stopes. or where the shoot is wide, by square sets. 
Stoping drills of the Leyner. Shaw, and Waugh makes 
are used for all general work, and with the aid of 
the 'blow-pipe' a great deal of driving and cross-cut- 
ting is done with these light drills. The machines 
generally used for long drifts are the Ingersoll 2 1 /i-in. 
and the Leyner piston machines. At Stratton's Inde- 
pendence driving on a small vein in granite with 2!/4- 
in. machine cost $4.44 per foot, while the stoper in 
phonolite and porphyry the cost was $3.25 per foot. 
Ordinary raising with a stoper is being done at a 
cost of $3.50 per foot, while raising in caved ground 
averages $9.19 per foot. The Independence property 
caved from the surface to the 500-ft. level in 1907 
since which time a large part of the work has been in 
broken ground. The average cost of driving and cross- 
cutting in 1913 was $4.10 per foot, while for develop- 
ment the cost averaged $4.65 per foot of advance, cov- 
ering all kinds of ground, both caved and solid. There 
is but one man to a machine, even on the Leyner and 
2 1 4-in. machines, though a shoveler is allowed to help 
set up. 

tJour. Wes. Soc. Eng., September 1913. 

=See Mining and Scientific Press, November 29. 

In the mining of wide lodes it has become customer} 
to provide permanent tramming drifts in the font-wall. 
From these, oroaa-outs are driven through the orebody, 
from which stoping operations an- rooted. As an 

example of tins class of mining, tin' in. lli... I at the 

South mine at ffalg lie max I it,-, I." It is known 

as the 'rill floor' method and various adaptations of 

it are in v. .-lie in the mines of Broken Hill. It pro- 
vides for filling while the stopes are being worked, 

At the property of the .Mount l.yell Mining & Rail- 
way Co., at Mount l.yell. Tasmania, a similar method 

of mining has been adopted, which is a combination 

of surface and under-round methods, and also hears 

some resemblance to tin- milling system of the Lake 
Superior district. Pig. l shows the surface workings, 
from which the idea of tic s.opc and method of mining 
operations may be had. At the present time work is 
being continued on the overburden and ore benches. 
and a large tonnage is being uncovered. All of the 
filling for the under-round workings is obtained from 
this source. As the property develops, the tendency 
is toward a diminution in the tonnage mined from 
the surface and an increase in the tonnage from under- 
ground workings, as at the Treadwell in Alaska. 

The pit is worked in benches with air-drills and 
cars, the ore being either trammed from the benches 
through a tunnel to bins on the mountain slope, in- 
dropped by gravity to the underground workings and 
thence to the surface. At the present rate of mining 
there is being stoped from the open pit of the Mount 
Lyell mine about 650 tons per day. The properties 
altogether produce about 30,000 tons per month at a 
cost of about $2.25 per ton. 

Caving Methods 

Slicing and caving methods have been developed in 
the underground mining of Lake Superior iron ores 
to an extent not equaled elsewhere. For the first time 
these methods were comprehensively described within 
the year, in a volume 7 written by C. E. van Barneveld 
and published by the University of Minnesota. By 
these methods the development period is made shorter 
than when open-pit methods are used, and the prelim- 
inary work, as a rule, is much cheaper. Another ad- 
vantage of the caving system is that it is possible to 
select the ore and maintain more uniform grades than 
in open-pit and steam-shovel mining, as the unit of 
operation is smaller. The capital outlay for equipment, 
is much less, and the method requires but a compara- 
tively small amount of timber. The extraction is also 
high, being estimated at from 95 to 98 per cent. 

The many advantages of these methods are leading 
to their wide introduction in the copper-mining dis- 
tricts of the West where wholesale mining is in vogue. 
At the Miami mine, near Globe, Arizona, a shrinkage 
method is employed which has made possible a cost of 

e'Open Stoping on Wide Lodes,' by Andrew Fair-weather. 
Proc. Australasian Inst. Min. Eng., N. S. No. 10. 

''Iron Mining in Minnesota,' Minnesota School of Mines, 
Experiment Station Bull. 1, p. 215. Minneapolis. 



January 3, 1914 

$1.20 per ton. An interesting recent development is 
the handling of ore from the dump by means of a spe- 
cial form of drag-bucket scraper, described within the 
year. 8 The drag-bucket, by the way. is now extensively 
used in mining iron ore in Cuba, and has found many 
applications in placer mining. At the Inspiration mine 
the method used underground is similar to that at 
Miami, though haulage is by means of compressed air 
and there are other differences. At Ray, the general 
system has been materially modified, and. as repre- 
senting the latest development, may be described. The 
Ray orebody as developed by churn-drills is reputed 
to be the second largest in the world. The ore is in 
the shape of a huge blanket deposit with an average 
thickness of 107 ft. over an area of 183 acres. A 
detailed account of the mining of this orebody has 

Fig. 2. 


drifts are timbered with 12 by 12-in. timber sets on 5- 
ft. centres. On top of these drift sets, which lie with- 
in the orebody at intervals of 25 ft., 'puny sets' are 
erected to hoM the stope chutes, and midway between 
the stope chutes are erected 'pony sets' for holding the 
pillar chutes. 

While the haulage-way drifts are being driven, 
smaller manway drifts are progressing at 100-ft. in- 
tervals on the sub-level 25 or 30 ft. above. These 
manway drifts are offset 12 1 /-; ft. to one side of the 
motor drifts, and out of them are run at right angles 
a series of parallel sub-drifts placed every 25 ft. over 
the whole orebody. These are driven so as to be 
directly over the stope chutes on the motor level, so 
that when raises are made from the stope chutes they 
will break into the stope drifts and become chutes 




■ '/■/"V''/.'//'', 




j*£ STKCE 4 




recently been written by L. A. Blaekner," an abstract 
of which is reproduced here through his courtesy. 

Owing to the heavy overburden and the low-grade 
of the ore, it is necessary that a large tonnage be 
produced per day, and toward this end a caving sys- 
tem has been developed, which consists of weakening a 
block of ore by a series of shrinkage stopes, when, 
after undermining pillars, the ore is drawn down sys- 
tematically, the capping crushing and settling gradu- 
ally over it. At the present ore is being mined from 
two shafts by this method, while a third, in high-grade 
ore, opens a body which is mined by square-set meth- 
ods. The low-grade deposits are opened by three 
motor-haulage levels. On each motor level a main drift 
is driven from the hoisting shaft along the edge of 
the orebody : from this drift a series of parallel side- 
drifts are run at 50-ft. intervals and completely through 
the orebody to a 'fringe drift' which runs parallel to 
the main drift. Somewhere at a convenient place 
along the main drift and outside of the orebody there 
is put in a raise to the sub-levels, as shown in Fig. 2 
and Fig. 3. This raise is usually divided into two 
compartments, one to be used as a manway and the 
other for hoisting tools and supplies. The parallel 

"Mining and Scientific Press, November 1, 1913. 

"The Ray System of Mining Ore,' Arizona Copper Camp. 

through which the ore is drawn to the tramming level. 
On a second sub-level, which is placed about 100 ft. 
above the first, manway drifts are driven parallel and 
directly above those on the first sub-level. These later 
serve as passageways through which the men and sup- 
plies enter and leave the stopes, and they also serve 
for ventilation. Along the manways of the first sub- 
level at intervals of 25 ft., or T 1 ^ ft. from the centre 
of each stope, there are put in manway raises to the 
drifts on the second sub-level. Chain ladders are use. I 
in these raises for the use of the men. While the 
manway raises are being put in, men with stoper ma- 
chines 'bell out' the chute raises so that when finished 
they have the appearance of funnels or inverted bells. 
In starting a stope, men with stopers drill a line of 
holes into the side of the stope drift. This line of holes. 
when blasted together, widens the drifts to 15 ft., so 
that they are ready to be mined and stoping opera- 
tions commenced. 

When this has been completed, manway sets of 8 by 
8-in. timber are erected in the manway drifts. In min- 
ing ;i stope, two lines of holes are drilled with stoper 
machines all along the back on both sides of the stope. 
one line near the side walls with the holes slightly 
'toeing' toward them, the other about four feet away, 
with the holes inclined slightly toward the centre of 

January :t. i;ii4 



the stope, In hard uT.niii.l i! is sometimes aeci 

to put iii a third sel of holes The holea are loaded 

with tin- r i'. .11 1- sticks of i" . dynamite and 7-ft. 

are used. The ore is drawn from the stop,- chutes 

into 5-ton ears on the motor level and trami I to t !■•- 

shaft. Onlj enough ore is drawn from the Btopes to 
allow the miners head mom in drilling. Air for the 
machines is supplied through a supply hose dropped 
from the second aub-level. The manways are always 
built up above the broken ore, so as to keep them clear. 
When the stop,- lias reached a point midway between 
the first and Becond sub-levels, the men usually descend 
into the stope through the manway raises, and the 
cribbed manways an- left behind. 

the ore. The total coal of mining bj this method for 1 1 • •- 

past year, including crushing the ore through a h 

mash screen ami delivering it on board ears with a 
proper apportionment of all ti \.-.l charges, »as 77.55c, 
per ton. This cost is higher than the costs applying 

to those parts of the mine whieli have been Bufflcicntl} 

opened to permit of mical working, and is accord- 
ingly higher than il will be in the future. 

Steam-Shovel Operations 

Steam-shovel operation as applied to mining maj well 
be said to be the most important development which 
the mining industry of the later day has experienced. 
Tin onomic conduct of the op. -rations, although seem- 


J&0$- - 


fes^sW -w — ■* -*' "*' 


' ^ f ~ *£% 

in» '^s^ksk^B^s^uyn wm*^^m~+3^B a ■•ssv^siisma 


When a block of ore has been mined by a series of 
such stopes, the undermining of the pillars is com- 
menced, starting with the pillar nearest the 'fringe 
drift' on the motor level. Raises are run out on inclines 
from each pillar chute until they intersect. From 
these raises at a distance of 10 or 12 ft. from the 
chutes, raises are run back so as to connect with each 
other directly over the motor drifts. After the raises 
have been connected all along the pillar, they are 
widened and drilled and blasted with deep holes, so 
as to undercut the entire pillar. Each consecutive pil- 
lar is mined in this manner. 

In most cases the orebody and capping is badly shat- 
tered and broken so that when the pillars are under- 
cut the capping breaks in a nearly perpendicular plane 
to the surface completely around the area. An accu- 
rate account is kept of the ore taken from every chute, 
so that the ore remaining in each is always known. 
Only a few cars are drawn from any one chute at a 
time, so as to give the ore time to settle gradually with 
the capping following after and without mixing with 

ingly simple, presents problems which if not properly 
analyzed may result in the difference between a profit- 
able and unprofitable investment. Thorough prospect- 
ing, efficient arrangement of the workings, and thor- 
ough organization are the main points for consideration 
in open-pit or steam-shovel mining. As typical of this 
class of mining, the iron ranges of Minnesota present 
the standard practice, which with modifications to 
meet local conditions, have made possible the so-called 
porphyry-copper mines of the West. Excellent work 
is being done at Bingham. Utah. Chino, New Mexico, 
and Ely. Nevada. Steam-shovels are also used in coal- 
mining in Kansas, Illinois, and other states, and in 
placer mining. 

Prospecting, if thoroughly conducted with churn, 
diamond-drills, or augurs (as at Moa) will clearly de- 
fine the nature of the deposit, position and extent of 
commercial ore. amount of stripping, laying out the pit. 
entrance and grades, and position of benches upon 
which all subsequent operations are based. Without 
going into detail, the importance of each step is ap- 



January 3, 1914 

parent and each has been fully discussed by various 
writers in the technical press. The shovel itself is the 
keystone of efficiency. The tendency, which has been 
toward the adoption of shovels of increasing size has 
been stopped, and the 100-ton shovel, or thereabouts, 
has come to be accepted as standard. The difficulty 
with the larger and more powerful machine lies in the 
increased wear and tear due to rough handling, which 
increases repair charges and decreases running time. 
In steam-shovel work it is important to make every 
arrangement with a view to securing full time work 
with the shovels. 

The orebody being mined by the Utah Copper Co. 
consists of lenses of ore with rock capping on the sides 
of Bingham and Carr Fork canons. Owing to the un- 
favorable position of the orebody on steep mountain- 
Bides, the site is not the most favorable for steam- 
shovel operations. Stripping operations require the 

and has an average thickness of about 220 ft. The 
ore consists of chalcopyrite, chalocite, and pyrite dis- 
seminated through a highly-altered porphyry, lying in 
great lenses at an average depth of 100 ft. below the 
surface. The deposit, being Hat, is adapted to the same 
methods of mining as those employed in the Lake Supe- 
rior iron pits. Stripping operations are conducted by 
steam-shovel at a cost of 33.64c. per cubic yard. In 
the stripping of this orebody, up to the beginning of 
last year, there has been removed 9.916,024 cu. yd. The 
longitudinal section. Fig. 6, through the deposit shows 
the amount of stripping necessary, the position of the 
orebody, the positions of the benches, and method of 
working. As the pit is widened and deepened, strip- 
ping and mining operations are carried on simultane- 
ously. The difference in elevations of the benches is 
about 50 ft., and they are about 50 ft. wide. Opera- 
tions are conducted by seven 95-ton and one 70-ton 

Fig. 6. longitudinal section theough the cot-per flat orebody. 

removal of capping in the ratio of one of rock to be- 
tween three and four of ore. The average thickness 
of the capping is 110 ft., the total amount removed 
last year being 4,676,568 cu. yd., and was removed at 
a cost, including prospecting, of 8.84c. per ton of 
ore produced. The position of the workings and the 
steam-shovel benches are as shown in Fig. 5. The 
benches are connected by switchbacks and are at about 
75 ft. differences in elevation. The capping and ore 
are broken by giant blasts. 'T '-shaped gopher holes are 
sometimes driven into the bank and giant blasts of 
black powder, ignited by dynamite and electric fuse, 
are used. Churn-drill holes are the common practice, 
eleven churn-drills being employed for this purpose. 
The holes are of 6-in. diameter and spaced according 
to the ground, the holes having a burden of 35 to 40 
ft. at the bottom. The stripped material is handled by 
dump-cars, while the ore is shoveled directly into stand- 
ard gage ore-cars of 100,000-lb. capacity and taken to 
the mills. The 22 standard-gage steam-shovels operate 
about 60% of the time. The actual cost of mining by 
this method last year was 26.35c. per ton, to which 
must be added the stripping and prospecting charge of 
8.84 cents. 

The Copper Flat deposit of the Nevada Consolidated 
presents an excellent opportunity for steam-shovel 
working. There are three pits, the Eureka, Liberty, and 
Heela. The deposit is 2600 ft. long and 1200 ft. wide. 

steam-shovels. In blasting. 'T '-shaped gopher holes are 
driven into the bank, as at Bingham, and churn-drill 
holes are used. The churn-drill holes are of 6 in. diam- 
eter and from 50 to 100 ft. in depth. They are cham- 
bered before firing. 10 The present method of moving 
the drill by a crane has been found to be a very 
decided improvement over the old method of making 
roads and moving it by its own power. Five men are 
required where formerly ten were necessary, and a 
great deal of time is saved. The actual cost of mining, 
including labor, supplies, repairs, management, taxes, 
etc., at the time of the last annual report, was 17.35c. 
per dry ton. During the last year of operations re- 
ported, there was mined by steam-shovel methods a 
total of 2,596,991 tons of ore averaging 1.603% copper. 
In this review only those features of modern practice 
as applied to the more important types of lode de- 
posits have been touched, in the hope that such a gen- 
eral survey of the subject may point out the trend of 
present-day methods and the possibilities of increased 
mining efficiency. While the step from .breaking ore 
by heat to the stoper and dynamite, from the 'chicken' 
ladder of the Aztecs to the giant hoists of Lake Supe- 
rior and Butte, from the divining rod to the diamond- 
drill, and from gopher methods to the steam-shovel has 
been a long one, there is still room for improvement. 

io'Blast-Hole Drilling in Open Pit Copper Mining,' Mining 
and Scientific Press, October 25, 1913. 

19] I 

Ml\l\i. II \ I II I. I'K 


The Decline of the Rand 

Bj II. s. Di \m 

There is something impressive in the suggestion thai 
the hnge gold-producing industry of the Kami has 
reaohed the downhill aide of its wonderful career, and 
it unaoks of the paradoxical to affirm this in the face 
of a record of steadily increasing gross production. 
Nevertheless, h study of the position must inevitably 
lead one t<> tins conclusion, des| ite the fact thai for the 
year 1912 the Witwaterarand produced gold to the 
enormous value of over £37,000,000 sterling, being an 
increase of over 3% millions us compared with the 
previous year. The explanation, of course, is thai us 
against the continued increase in production there is a 
marked decrease in the amount of distributable profit. 
The sum of dividends distributed shows a steady ad- 
vance up to 1909, but the record since then, as indicated 
b) the following summary — is eloquent of the change 
that has come over the industry: 

Year Tons milled Output Dividends 

1909 20,543,759 £29,900,359 £9,523,618 

1912 29,163,803 37,182.795 8,331.575 

Difference +8.020,044 +7,282,436 =£1.191,940 

Since 1909, therefore, the tonnage crushed has in- 
creased say 40', and the output 24%, while the divi- 
dends have/ decreased 12%. From the investor's, and 
In fact from almost any. standpoint, the vital figure is 
naturally the dividend, and since the capability of the 
industry to continue its life depends upon its concur- 
rent capability to earn dividends, it may logically be 
argued that the serious droop in the latter direction 
may be safely regarded as an indication that its 
vitality is on the wane. Every effort has been made 
to keep on the up-grade, because it was realized that 
once a sign of serious falling off became visible, all 
hope of ever recovering would practically be gone. The 
brains and the energies of the administration have. 
therefore, been turned from one point to another until 
it may be said with certainty that all the obvious 
remedial expedients have had a trial. In the past ten 
years We have seen the adoption of: 

The tube-mill, with increased stamp-duty and higher 

Heavy stamps, with lower capital outlay and greater 

Iland-stoping in narrow stopes. with less waste rock 
and therefore higher-grade mill-ore. 

Machine-stoping' in wide stopes, saving hand-labor, 
and giving large tonnage at low cost. 

Selective mining, to give the maximum possible 
profit in the shortest possible time. 

Central power-plants, to reduce the cost of energy. 

Central administration, to reduce management 
charges and to increase general efficiency. 

And what has been the result of it all? Certainly 
largely increased capital outlay, and equally certainly 

much greater tonnage of rock handled, and un- 
doubtedly a reduced 'working cost' per ton, bul un- 
fortunately a lower yield per ton and a smaller profit 

per toll. 

There has been greal argument ;h to the relative 

merits of big tonnage and low-grade me. as opposed to 
small tonnage and high-grade ore. The objection to the 
former policy is that it lias entailed heavy capital out- 
lay and that it has led to the milling of much worthless 
rock. It is claimed, moreover, that any advantage thus 
gained in Operating COSl has been more than offset bj 
dilution of grade. Against these arguments it is con- 
tended that 'working costs' have been reduced with 
the result that lower-grade ores could be worked al a 

Limits of Wholesale Mining 

Without a doubt the practice of increased tonnage 
at any cost has been carried, in some eases, too far. 
There is a critical point naturally in the relationship 
of the tonnage milled per day to the economic working 
of any mine, but in arriving at this point, due weight 
must be given to a number of contingent factors such 
as labor, number of shafts, development facilities, etc., 
and any one of these may in itself set a limit to the 
possibilities. That is to say, it might be figured that a 
property containing a probable billion tons of ore 
would appear to be unsuitably equipped if it had a 
plant of only 100 tons per day capacity, and certainly, 
on the basis of working out the mine in any reasonable 
'life.' it would appear to be so; but, for the reasons 
bound up in the contingent factors, above indicated, it 
might be quite impossible efficiently to handle more 
than 300 tons per day. In such a case, an equipment of 
200 tons capacity would probably lead to inefficient 
work in the attempt to keep that plant running full 
time, and the result would be disappointing from every 
aspect. Apparently this is what has happened in many 
instances on the Rand. Shortness of labor, coupled 
with other difficulties, has forced managers to resort 
to all forms of expedients for keeping their mills run- 
ning — the commonest evil being the inclusion of waste- 
rock with the mill-ore. Waste not only costs just as 
much to crush and treat as ore, but whereas it con- 
tains nothing when it comes to the mill, it has actually 
carried with it some of the precious metal when it is 
finally dumped. It has. therefore, substantially 
sw-elled the monthly statement of working expenditure, 
and has simultaneously appreciably reduced the 
revenue — both very undesirable results. Personally I 
hold the opinion that it is largely for this reason that, 
in several instances on the Rand, the increase of milling 
capacity has been attended with unsatisfactory results, 
and the degree of the disappointment is only properly 
realized when allowance is made for the amortization 



January 3, 1914 

(if the additional amounts of capital involved. Take, 
for instance, the case of a company crushing 300 tons 
per day for : !-'<i days per annum with a 20 years' life. 
Assume ii increases itv to 600 tons for an out- 

lay of £120,000. Without changing any interest, this 
sum would represent in its redemption an amounl of 
1.3 shillings for every ton of ore milled during the rest 
of the life of the mine, and if a reasonable rate of com- 
pound interest lie allowed it becomes a correspondingly 
more serious matter. Unless a mine is in a position 

adequately to satisfy the demand for the larger ton- 
nage, therefore, without undue strain at any point, 
it cannot do it to advantage. Hoisting shafts, surface 

and underground ore-stations, stope-faces, tram-levels, 
breaker-stations, etc.. are all called upon for extra duty. 
and it lias not infrequently occurred that, while the 
treatment plant has had its capacity doubled, nothing 
has been done relatively to increase the capacity at 

other points, and the management immediately upon 
Starting its new equipment, has found itself in serious 
trouble with no possibility of saving the situation ex- 
cept by shutting down — a resort too alarming from the 
stock market standpoint to lie feasible. In shaft-work 

alone the additional time required for introducing and 
clearing the increased number of under-ground 

laborers, and handling the extra amount of tools. 

stores, etc.. is in itself an important matter — especially 

in deep mines — that must be considered before the 

question of handling extra milling and development 
rock is solved. 
Then again the demand for largely increased develop- 

nii nl area and number of stope-faces has in many eases 
not been properly met. In short, while every care lias 
been bestowed upon the reduction plant, the tendency 
has been to neglecl the mure vital underground part. 

with the result already indicated. 

A legitimate increase in milling capacity, consistent 
with the other features specified, must be beneficial to 
the business side of the profit-and-loss account, hut it 
may easily be conceived from tin' foregoing remarks 
that an ill considered, or one-sided increase, might not 
only fail to secure any real benefit, but might even do 
great and lasting injury; ami when this was dune 
merely to follow out a fashion that had for its object 
the automatic lowering of working cost, there is no 
doubt that it was unprofitable. 

I n vest urs miffht therefore have been saved a large 
amount of capital outlay that indirectly has had to 
come from their pockets. 

The Labor Shortage 

The labor difficulty has been more serious than is 
realized by most people outside the Rand, and ever 
sine' the repatriation of the Chinese, there has been a 
shortage in the supply. It will be remembered that 
at the i»l of the Boer war. there was a great deal of 
0] timism regarding the supply of native labor, and the 
leaders of the industry, men of great experience, wen' 
Confident that with the declaration of peace would 
come a big inflow ol' natives. In this they were disap- 

pointed. When it became clear that the supply was 
unequal to the demand, n urse uas had to Chinese 

labor. The initial cost of the introduction of this labor 
was exceedingly heavy, first because of the stringent 
regulations in* regard to housing and feeding, and the 
control generally, and. secondly, because of the inex- 
perience of the coolie in mining. No sooner had the 
industry fought its way through these difficulties than 
the Chinese labor question became a political gambling 

counter, and most unjustly it was deer 1 that the 

coolie must be repatriated. Thereupon the old diffi- 
culty in regard to native labor was renewed, and the 
industry suffered a serious misfortune, and incidentally 
a number of the mines, whose equipment had been in- 
creased "U the assurance of a full labor supply, found 
themselves unable to keep their mills adequately sup. 
plied with clean milling ore. Wider stoping and the 
more extended use of machine-drills were adopted to 
meet the difficulty, with the results already indicated. 
Unfortunately, the average width of the orebodies of 
the .Main Reef series is low. especially in the higher- 
grade stopes, and the shattering effect of blasting 
heavy machine-drilled holes inevitably led to the in- 
clusion of much fine waste-rock that defied the closest 
sorting operations. 

The Interest Charge 

From the financial aspect, the increase of milling 
equipment necessitated the finding of large sums of 
money and led to watering of capital on a big scale. 
The money was either obtained by the issue of new 
shares, or by borrowing at fairly heavy rates of interest. 
In the former ease, the dividends had to be distributed 
over an increased share capital; in the latter ease, 
profits had to be absorbed over long periods for re- 
payment of the loan. Since the increased profits were 
not commensurate with the redemption of the increased 
capital, the shareholder naturally suffered. The issue 
has been obscured, however, because of the practice of 
declaring 'working profits' per ton — an arbitrary 
figure that takes no cognizance of either capital 
redemption or dividend distribution. A good deal has 
been written on Rand methods of book-keeping, and it 
has been shown* that on the monthly profits declared 
by the various companies approximately only 60 to 80% 
is actually distributed in dividends. Custom regulates 
pratiee in the matters, and once having begun the 
policy of issuing this form of statement it became al- 
most impossible to alter it. The term 'profit,' how- 
ever, if it he rightly interpreted, permits of none of 

these fanciful ist ructions, and the use of the word on 

the Rand has, therefore, been incorrect and calculated 
to mislead. Many mines have been in the habit of de- 
claring 'monthly profits' when the amount of such 
'working profit' would not nearly cover a conservative 
contribution to the interest anil redemption fund; in 
other words, while declaring 'working profits' the 
company was actually losing money. While there may 
lie. and doubtless is. much to be said from the financial 

•In The Mining Magazine, for example. 

I'll 1 



ucpedi&no) point of view, iu favor ol n ug a 'work- 

■■i ' that makes no pro\ ii capital <■•■ 

demption and thai permits of independent ourrenl 

oapital at unt, there can be do argument as to what, 

in the strict business sense, the praotioe should I" 9 
however itom permits, there is little 

probability of ■ change, 

Seleotivc mining, lik.- increased milling capacity is. 
in principle, easily capable of alms.-, although frankly, 
I am "f the opinion thai for the Rand a little more of 

i- found in the deep levels todaj In effect, therefore, 

the avi de of the ore on these lovela in ipari- 

sun wiili the a\ ide dow u to the |ow< 

ble depths would represent a selected product, or, in 
other words, to reproduce the same ■■ ide of 

ore from the lower levels, would, under present condi 
tions, require a grcal deal mo on. 

It lias I ii argued, in fact, it is still argued bj soma, 

thai there is no diminution in the •.•rail.- of Rand ot 
depth is attained, but the argument '-an bardly be sup- 


tin Eormer and a lot less of the latter would, all things 
being considered, have been better. So long as select ive 
mining is followed on the principle which has fur its 
foundation the desire to earn the maximum profit, and 
iiiin the calculation of which all those essential con- 
siderations of capital redemption and working ex- 

pelldieney are included, so long and so far will it lie 

profitable. There can he no law laid down for its uni- 
versal application, because the conditions an- never 
quite the same in any two mines, and each nil ist be 
figured out. on its own merits. 

In the earlier history of the Rand, and in the 

shallower zone, nature had so arranged matters that in 
most cases selective mining was imperative, that is to 

say that owing to surf; ncentration, the proportion 

of high-grade ore on the upper levels was greater than 

ported by a reference to the facts, ami indeed it re- 
quires only a cursory study of the slatislies over the 
past few years to he satisfied on this point. On several 
occasions lately 1 have not hesitated to express my 
views in this connection in writing, and in Hill P. II. 

Hatch, the well known geologist made the following 
statement : 

"1 have not been able, with the material at my dis- 
posal, to come to any definite conclusion on this point; 
hut I am Inclined In the view that a general impoverish- 
ment in depth does exist. It would be quite possible, 
from existing records and assay-plans, to settle this 
really vital question ; but hitherto no figures relating 
thereto have ever been published by any of the big 

It is interest in": to note that very recently one of the 



.lanuarv :(. 1914 

largest of the groups! on the Rand included in its 
technical statements the following: 

"There can be no doubt that there is a gradual fall- 
ing off in the average values over large areas of the ore 
developed as the deeper sections of the Rand are opened 
up, and the time will come when the full importance of 
considering every point which will tend to the lower- 
ing of costs for the successful treatment of enormous 
quantities of low-grade ore, will be realized by the 
<;< vernment and the general public of South Africa at 
large. This fall in average grade with depth at the in- 
dividual mines has been shown to be true, not only by 
the screen samples of the ore milled, and by the re- 

tracted from the Chamber of Mines' past records, and 
dealing with the dividends paid on the capitalization 
of some of the most successful companies speak for 

Dividend return 
Name of company. on capital. 

Ferreira 4415'v 

Crown Reef 2404'. 

Johannesburg Pioneer 2107'. 

Wemmer 1237'i 

Meyer & Charlton 1105'. 

Durban Roodepoort 1 1 00' ; 

As evidence of the magnitude of the operations of 
some of the companies, the following is interesting: 

Name. capital. 

Robinson £2,750,000 

Village Main Reef 472,000 

Crown Mines 940,106 

East Rand Proprietary 2,445,897 

Geldenhuis Deep 585,753 

Randfontein Central 4,193,700 

Simmer & Jack 3,000,000 

Meyer & Charlton 200,000 

Note: These are only some of the best: there are many others. 



Value per 






































covery value per ton, but by the careful sampling and 
assaying of level by level in each mine as greater depth 
was reached, by careful sampling of stopes on each 
level sending ore to the mill, and by the yearly recast 
of the ore reserves in each mine." 

The mere fact that high-grade ore is still found to 
occur in the deep levels is of no weight in the argu- 
ment. The question is one of average width and value 
per foot of linear development, and the available evi- 
dence of a gradually falling grade, so far as my infor- 
mation goes, appears to be overwhelming. But. to my 
mind, there is nothing extraordinary in this; on the 
contrary, it is in keeping with all mining history, and 
is, in the nature of things, to be expected. And surely 
it is better to have had miles of high-grade ore-shoots 
of lateral continuity than isolated and narrow ver- 
tical shoots descending miles on the dip. The ques- 
tion requires no discussion. 

Out of a total production of £347.05-1.851 from 1887 
to 1912. dividends amounting to £88.159,489 have been 
paid, equivalent to about 25% of the gross production. 
From 1890 to 1912 the world's production had risen 
from £24.421.000 to £98.267,000, and of this latter figure 
the Rand is responsible for roughly 40%. Of the total 
increase in the year 1912. as compared with the year 
1890, therefore, the Rand, single-handed, is responsible 
for as much as the rest of the world put together — a 
remarkable record truly, and it is difficult at the mo- 
ment to see from what source any falling off from 
the Rand is to be made good, for in the last few years 
there has been such a dearth of new heavy producers 
as to make the present outlook rather black. 

Some of the individual performances of the Rand 
mines have been splendid. The following figures, cx- 

tConsolidated Gold Fields report by H. H. Webb of South 

In a comparison with other goldfields of the world 
the Rand, considered as a whole, has no parallel, either 
in the nature of its formation or its magnitude. True, 
auriferous conglomerate occurs in several other locali- 
ties in South Africa and also in the United states, but 
only very limited areas have proved capable of being 
worked at a profit. The mines of the Rand, with the 
exception of the main east and west breaks, are divided 
merely by boundary lines, and the Rand may be looked 
upon as one immense mine, arranged for division of 
ownership and convenience of working into a number 
of small units. At Butte there is something of the sort 
on a smaller scale in the copper mines: and at Pachuca 
and other places in Mexico, in silver mines: and at 
Kalgoorlie in gold mines; but there is nothing really 
comparable with the Rand. Out of the first 60 gold 
mines of the world over 30 are on the Rand. 

I have been among those who have, in the past. 
pointed out the advantages of having the mines tied one 
to the other like a string of beads. The obvious ad- 
vantages are so obvious that to think anything different 
at this stage seems rather feeble. But, frankly. I 
do not feel quite so sure about it. not that I dispute 
the obvious advantages at all — they are actual without 
a doubt — but I think that some of the disadvantages 
that are not so obvious may be just as material or even 
more so. "When two engineers are left to battle by 
themselves with a given problem, it is possible that they 
both may arrive at some original solution, but if the two 
work together on it. the weaker or the less industrious 
one may be tempted to lean on the other, or, for other 
reasons, one of them may utterly fail where, if he had 
been left with the responsibility, he might have accom- 
plished something. A tour of inspection along the 
mines of the Rand must impress even a casual observer 
with the fact that there is a faithful reproduction of 

Jamiar\ < I'M I 


in. tli... I .in between nun.' and mine In hot, duplication 
where u -... patent thai the obaerver oould not be 
■urpriaed to learn that the deaign had emanated from 
■ verj few individuala Thia in itaelf might not always 
be .1 bad thing, and aaauming that the reaponaible men 

in charge of the laying out ,>t" the develoi nt and 

equipment were invariably right, then there oould be 
no question as t,> the beneflta of the system. But if 
ili.-,.. men should have been obstinately wedded for 
sentimental reasons to methods or designs that, from a 
i n.i L>al .is| eot, were opposed t,. the beal knowledge 

available in other purls of the world, pereiste in such 

iin idea might conceivably cause an enormous amount 
of useless expenditure. Furthermore, the policy of 
leaving the responsibility of these things in the hands 
of « few k :« | >t to lead to the stultification of ide 
the part of subordinate engineers. 

Engineering Versus Profits 

There can be no donbt that a great deal of excellent 
work has 1 11 achieved on the Rand from the engineer- 
ing standpoint, hut it cannot be denied that the ex- 
penditure on capita] account has in many cases grown 
"in of all proportion to the real requirements, and to 
some extent the proximity of the mini's to each other is 
responsible for them. While the metallurgists of the 
Kami have been Bpending millions in covering large 
areas with heavy, expensive, and cumbersome percola- 
tion cyanide-plants, and decantatiou slime-plants. 
other countries have been able successfully to evolve. 
under much more trying conditions, and often with 
meagre financial resources, new systems of treatment 
on more complicated ores even with great profit. The 

Rand, si the introduction of the cyanide process in 

1 1 arly days, has done practically nothing to add to 

the glory of engineering achievements. It has rather 
followed a policy of sticking to the one old principle 
and developing the details of that principle to the last 
limit. In my opinion, and I share this with a great 
main other engineers, the Rand might have saved itself 
a large amount of capital outlay if it had adopted 
immediately after the war, for the treatment of its 
unusually simple clean ores what has heen accepted all 
the world over in the last ten years, namely, the one- 
product one-treatment method. The real truth of this 
matter is obscured by the fact that metallurgical work- 
in,' costs do not on the Rand take into account the 
amortization of capital expenditure, and, therefore, no 
mailer how absurdly high that expenditure may have 
been, the real meaning of it has not been realized. It 
would be safe, however, to say that there are instances 
on the Rand in which, if this principle be applied, the 
redemption figure per ton treated would amount to al- 
most as much as the stated figure of 'working cost, ' and 
it is just as real a figure, although not shown, as the 
other one. If the mines of the Rand had been more 
isolated, individual effort would have been greater. 
competition keener, methods more original, expense 
much less, and profit correspondingly much greater. I 
am making no personal attack in these remarks, being 

in uianv respects perhaps oaible, and tbei 
as blameworthy as maaj others, but I put it dowi 
system that could onlj have an-- t of the proximity 

of the mines 

In heading these notes 'The I >.<lii f the Rand, 1 it 

must not be inferred that I am pointing t,, anj preoipi 
tous ending of the industry ; i believe firmly, si before 
stated, that the Rand will die verj hard. and. for manj 

many years i .me. it will hold the plai f pride in 

the world's gold production h is not possible, of 

curse. In foresee what new methods may arise in the 

treatment of ores to lower ih ,st of production, but 

H may be taken for certain thai as the margin between 
expenditure and revenue i mea uarrower, so will the 

effort to keep them apart increase, and ways and alls 

that arc not known today will be born of -ssity to 

keep the industry still alive ii is fashionable to talk 
about the possibility of treating the untold millions of 
tons of ore lying in the Bjmberley Keel' scries, and it 

is a fact that even up to now this series has I n able 

to produce quite an app] iable tonnage of pay-ore. 

There is always, however, a limit to what is feasible 
under given conditions, and the one great limiting 
factor of the Rand is the comparatively narrow average 
stopable width. To get tonnage on narrow orebodies 
means extensive development, and costly mining, and 
even with heavy reductions in the cost of materials such 
as explosives and so forth, one cannot at present see 
that it can ever amount to enough to make 2 or 3 dwt. 
ore cover all expenditure, and return a reasonable 
interest on the money invested. Failing the discovery 
of new deposits therefore, the end. though not in sight, 
is within the limits of approximate calculation even 
after liberally discounting for new unforeseen favorable 

Decline in Speculation 

Probably the worst feature id' the decline is that 
speculative interest gradually dies out. and it is difficult 
to interest the public sufficiently to get their purse- 
strings loosened for new capital requirements. 

With the channels of fresh capital dry, the encourage- 
ment to lay out money on attempting new expedients 
for the reduction of working costs is little, and those 
now in financial control will probably be inclined 
rather to keep down all new capital expenditure to tin- 
narrowest limits, leaving the bulk of the present pro- 
ducing mines to end their lives with the barest main- 
tenance of their existing equipment. This, of course. 
is always assuming, as before stated, that there is no 
new and startling discovery of some unforeseen nature, 
favorably affecting the question of working cost, be- 
cause, after all, that is the crux of the whole of the 
problem now facing the Rand. My summarized reading 
of the indications is that the gross output, like the 
dividends, will soon begin to decrease, and the drop 
will be steady, though sure. 

Finally, the Rand industry is like a great man who 
even in his declining years has still stood bead and 
shoulders above everybody. 



January 3, 1914 

Hydro and Pyro-Metallurgy of Copper in 1913 

By Thomas T. Read 

I. Hydro-metallurgy 

It is somewhat illogical to place the discussion of 
the hydro-metallurgy of copper before that of ordi- 
na -y smelting methods. But this reversal is perhaps 
justified by the present keen interest in wet methods 
for the extraction of copper from its ores, arising from 
the necessity for devising some means to recover the 
copper present in the form of oxidized minerals in 
tin enormous tonnages of low-grade ores now being 
mined and milled in many different places. The ox- 
ides, carbonates, and silicate of copper are all rebel- 
lious both to ordinary wet concentration and to nota- 
tion, and the use of hydro-metallurgical processes 
seems the only possible means of effecting the recov- 
ery of their copper content. The general criteria of 
the hydro-metallurgy of copper has been discussed al 
some length in these columns on several occasions, 1 and 
needs no further references. All the most promising 

i'Wet Methods of Copper Extraction.' Editorial, Sept. 21, 
1912; 'Sulphuric Acid Leaching,' Editorial, Aug. 16, 1913; 
'Leaching of Copper Ores,' John Rooke-Cowell, Aug. 23, 1913. 

of recent work lias centred around leaching in sul- 
phuric acid solution. The simplest method, to be ap- 
plied on the largest scale, is that proposed for the 
brochantite ore of the Chile Copper Co. at Chuquica- 

niata. This has already been described at some length. 2 
but may be summarized by say jog that careful large- 
scale experimental work done by E. A. C. Smith has 
demonstrated that the copper content of this hydrous 
sulphate of copper can be extracted by leaching the 
ore, after crushing to 3-mesh, with 8 or 9% sulphuric- 
acid solution. This is to be done in concrete vats hold- 
ing IKIOO tons each, and it is estimated that one day 
will suffice for filling, two or three days for leaching 
and washing, and one day for discharging, which is 
to be done with clam-shell buckets. The copper in 
the pregnant solution will be precipitated electrolyt- 
ically, a 40.000-kw. generating station on the seacoast 
and a 100-mile transmission line being already under 
const ruction. This ore contains no gold, silver, bis- 

2'Leaching of Copper Ores in chile.' Editorial, Mining and 
Scientific Prexs. June 21. 1913. 


Junta*} 3, 1914 

MINING AND >i II \ I II l< I'KI .s> 


moth, amnio 01 antimonj and, being » sulphate, the 
Moln t it>n buildi n|> in nilpharie aoid s.. that aeid eon 
■umptkn is nil. Small aim. nuts of chlorides and ni- 
nt and cause difficulties which have 
arfully overeome, but the mean* bj which 
this is done have not yet been disclosed 

ching work at the Braden has been delayed bj 

more urgent problems, and the -ssit\ of using the 

available electric energy for other pnrpoa a E. A. 
Cappelen Smith ims recently described the proposed 
"The process decided on was 
roasting of the concentrate in ;i Wedge furnace in such 
a manner as to eliminate practically all of the sulphur 
and at the same time oxidize all the iron t" the ferric 
state. The concentrate, after roasting, contained 2 to 
i', sulphur, practically all in the form of sulphate, 

15 to 18JI copper, and about the same amount of b 

of which only a very small amount was present in tie 
ferrous Btati . The roasted concentrate was Leached 
with dilute sulphuric acid, the leaching operation 
being divided into two Btages: first, neutralizing 
leaching; second, acid leaching. The solution from the 
neutralizing leaching was electrolyzed direct, whereas 
the solution from the acid leaching was neutralized bj 
the following batch of calcines. Several teachings made 

in the plant indicate an extractii f between I' 11 and 

opper presenl in tin icentrate. " 

Leaching at Butte 

The most interesting announcement of the year' was 
that roasting and leaching with sulphuric acid, follow- 
ing a method devised by Frederick Laist, was to be 
tested on a large scale for treating the tailing from 
wet-concentration processes ,ii Anaconda. An SO-ton ex- 
perimental plant was constructed, and the results of 
the first work were published* during the summer. 
As this paper is readily accessible and contains many 
important details, it should be read by all. Briefly, 
the process consists in drying the tailing from wet 
concentration on the upper hearths of a McDougall 
roaster, adding salt, and roasting at a low temperature 
to keep down the volatilization of copper chloride and 
the production of ferrites. The calcine is then leached 
with sulphuric aeid solution. Experimental work later 
in the year has been highly successful. It was at first 
proposed to precipitate the copper from this solution 
by BL.S, thus regenerating EUSO.,, but more recenl work- 
indicates the desirability of using an iron sponge pro- 
duced by reducing 20-mesh calcine with coal dust in a 
McDougall furnace. The sulphuric acid required for 
leaching is to be made in lead chambers, from the SO, 
gas obtained in roasting rich coarse concentrate, at an 
estimated cost of $4 per ton. Tentative plans for a 
2000-ton plant are well advanced. As a result of the 
success of this work experiments along similar lines 
are being made at several places. 

In preceding years I have usually closed the dis- 

'Editorial, Mining and Scientific Press. May 3. 1913. 
•'Roasting and Leaching Tailings at Anaconda.' Frederick 
l.aist. Bull. Amer. Inst. Mtn. Eng.. July 1913. 




January :!. 1914 


cussion of this topic with an expression of hope that 
by the following year details of the practical operation 

of leaching plants would be available. That hope lias 
at last been rewarded, P. E. Peterson" having pub- 
lished descriptions of the Butte-Duluth and Bull 
whacker plants, which were erected at Butte last year. 
It is to be deplored that these descriptions do not in- 
clude any account of the numerous difficulties encoun- 
tered in the early operation of these plants, as being 
more helpful to operators elsewhere than the' methods 
found successful. These plants operate under special 
conditions, in that they treat silicious ore compara- 
tively free from the iron oxides present in ordinary 
oxidized ores. The Butte-Duluth plant is 100-ton and 

tO T u u Itun Acid T«c 

en, ».... I 

I IK Too Mtuuflof Tkuk ( 

I Si Tvi. &l v r&{c Tank 

— *— r 

Uandrj t A;iuior 

! r 

tad Wisb Wait 
Wut> Walct 

til Divan- -ulutb^ 

BUtfrvljtic < 


Barrel Iron Pnvi,-<t>t°r 

kt„U< --r. Ln.l 


. bulpburic Add 


the liullwhacker 125-ton. In the former the ore is 
crushed, by gyratory and Symonds disc crushers, only 
through a Yo-ia. screen; in the latter it is reduced by 
rolls until it passes 16 mesh. The Yz-in. or e is dumped 
into V-shaped leaching vats, provided with a filter 
bottom of hoards bored with %-in. holes. After leach- 
ing with acid, the vats are discharged through doors 
in the bottom. The solution is drawn from the 
vats, allowed to settle, elevated to lead-lined tanks, 
>Min. Eng. World. Sept. 6 (p. 423) and Oct. 4 (p. 5S5). 1913. 

where it is heated to HOC., and thence to the electro- 
lytic cells. Each of these is 30 by 3!) in. and 8 ft. 
long, lined with hard lead, and provided with 20 
anodes of hard lead, weighing 20 lb. per square foot. 
The cathodes are ordinary starting sheets of copper. 
The current density used is 12 to 13 amperes per square 
foot, and the cathodes assay 99.96% copper, according 
to Mr. Peterson. The present cost is estimated by him 
as 14c. per pound of copper, but he thinks this can 
be considerably reduced, as the sulphuric acid re- 
quired now costs $27 per ton or 4%c. per pound of 
copper produced. If locally manufactured on a large 
scale, the sulphuric acid should not cost over l%c 
per pound of copper. The percentage of extraction on 
the '--in. ore was so low that it was necessary to 
abandon that method and for a little over two mouths 
now the following process is being successfully carried 

'flu- Company is building at the present time a 1000- 
ton dry-crushing plant to reduce the ore to 10 mesh. 
This consists of swing-jaw crusher, intermediate 
gyratory crusher, Symons disc crusher, rolls, and im- 
I ;u-t screens. The dry ore is fed to a mixer with 




approximate!} four nuns u> weight of 8 to 10 sul 
phurie ieid which diaeharfi ■ t.. .1 liurr elaaaifler 
wli i.-li i% id.- fir-Mi of it wriei of 8 arranged in raefa 
.-> manner that the land »ill discharge from ana 
into the next Various time* of eontaot with the 
aeid in the RraUfour Dorr elaaaiflen were tried out and 
it araa found that approximate!) in minutes gave an 
extraction between 86 and 90' . The last i«u elaaaiflen, 
in. I 6, in the - uaed for washing, The 

overflow from So 5 is aaed to make up for the Ion of 
hi-iiI in tin- strong arnl solution 

Tl verflow from No. 1 elaaaifler earriea off 

approximately about 13JI of the total weight of ore as 
.slim- Tins., .is well as the overflows from classifiers 
nil I are run ti> the acid lesching-tanks in the bot 
torn of whieh is a layer of crushed ore to act as a filter. 

The underflow from these filters passes to il leetro 

lyl IK ami mi ti> the Btrong acid storage-tanks 

where the solution is broughl np. This method "f run- 
ning the slime in the acid teaching-tanks is only tempor 

- later on it is intended to r >ver the dissolved 

copper content by passing this pulp through a series of 
D.irr continuous thickeners operated so as to give 
counter-current washing. 

Handling Acid Solutions 

The s >nd water wash, which is applied to the lasl 

elaaaifler, goes to scrap iron precipitation. The Band 
discharged from the classifiers approximates 18 to 2095 
moisture. No. 1 classifier in the series is a machine 
30 ft. long by 4 ft. <> in. wide. The rest of tin- classifiers 
are of standard duplex size, 15 ft. long l>y 4 ft. 6 in. 
wide. These machines are built with wooden boxes and 
all moving parts that come in contact with the aeid. 

also built of w 1 (hard maple). The wear of the 

wooden teeth is surprisingly small, but experimentation 
has shown that plate glass teeth are the proper thing 
to us.- here, and will be installed in any future classi- 
fiers built for this purpose. This scries of G classifiers 
is operating at the present time and has a capacity of 
approximately 200 to 220 tons per 24 hours. 

The Dorr Cyanide .Machinery Co. is building another 

series of o machines each 30 ft. long by 8 ft. wide, which 
should have a capacity of 400 to 500 tons of ore per day. 
At the present time strong acid solution is being added 
with the ore to No. 1 classifier, but later on this practice 
will be altered and the overflow from No. 5 Dorr classi- 
fier will In- mixed with the dry ore; the advantage of 
this being that the strong solutions can be kept from 
coming in contact with the slime, the weak aeid solution 
mil taking iron and aluminum into solution so 
readily as the strong. All solutions in the plant are 
kept at approximately 55° C. The cost of this in the 
northern winter climate is likely to form a considerable 
item of the total working cost. 

At the Bullwhackcr plant, which is near by. the 
ore, crushed to 16 mesh, is agitated with 10% H,SO, 
solution, 2 tons of solution to 1 of ore, in a Hendryx 
agitator. This agitator is to be replaced by Dorr clas- 
sifiers when the plant is enlarged. The effluent solu- 

' oontaining ai moth as t i,, v, copper, is de 

canted from settling tanks and tent t.> electrolytic 
.-.lis which .hiTer from those previous!) described in 
being oircular, :» ft. in diameter and 5 ft deep, bold 

nig 21 oathodea About half of tl pper content 

of Ihe so luti ., deposited alectrolytically, ami it then 

-oes back to be used for further leaching. Tl si 

i. f production of copper is hen- also about lie per 

Difficulties in Leaching 

Tin- difficulties of tin- method employed in these two 

nulls are. perhaps, n>.i in, naturally, m. I discussed at 
length. They may he summarised as follows, line 

ornshing is necessary in order that tl opper miner 

•lis shall 1 iinpletely soluble, but lends 1,, the pro- 
duction of colloids rslime'i which make the solution 
cloudy and difficult to settle. It is. of curse, impos 
Bible to deposit a pure cathode from a solution con 
tabling impurities. The leached ore is difficult to wash 
for the samp reason, and also because the use of wash- 
water involves tin- discharge of solution, which car 

I tt.*n*. Tuik I f* 

l-l .!■ I. . Il' 







-- a 

Batmp l«n PwsI.iH.iup | 


clrjolj Ic 



AolJ fori 
I'-.i'-P I 

bump T,pl. M11 , u^.uno,, 

W.,1. W«U» 

■aa^w- Sulpliu.le AcU 


ries away with it not only the expensive sulphuric acid 
but copper as well. This copper can be precipitated 
on iron, but the consumption of iron by the acid cuts 
down the net return. The difficulties and excessive 
consumption of energy in precipitating copper electro- 
lytically when using an insoluble anode are too well 
known to need repetition. Here the resistance of 
the solution has been decreased by preheating it, and 
its conductivity is kept as high as possible by only 
precipitating half of the copper present. At several 
other mines, notably the Nevada-Douglas, preparations 
are being made for the construction of similar plants, 
but it is not to be expected that these can be put into 
operation without first solving local problems. 

At nearly every important copper mine in the West 
some member of the chemical or metallurgical staff is 



January 3, 1914 

studying hydro-metallurgical problems in the light of 
local conditions. The work at the Shannon, Calumet 
& Arizona (Ajo), Arizona Copper, and Braden mines 
was described in my review for last year, and no re- 
ports of progress have since been given out. At the 
Keystone and Inspiration, both a Miami, interesting 
work is being done. J. Parke Channing has described 
thi work in the Bulletin of the Mining and Metallurgi- 
cal Society of Atnerica. R. < '. Canby, fit the Keystone, 
is the possibility of using cast-iron hearths as 
.it the Steptoe Valley smelting plant, later mentioned, 
in the McDougall roasting furnaces, so that the fuel 
used on one hearth would better heat those above. He 
proposes to use a special design of burner which will 
permit the use of oil as a fuel along with the main- 
taining of a low temperature on the hearth. At the 
Copper Queen the leaching of low-grade ores is also 
being studied. 

Leaching at Ray 

W. Y. Westervelt describes in some detail, in the 
November Bulletin of the Mining and Metallurgical 
Society, the following record of a 33-day test on the 
average ore at the Ray mine in Arizona. 

"The ore in the vats ;it the beginning of the tests was 
carefully sampled and assayed by the vat. That added 
during the test was weighed, sampled, and assayed by 
the vat charges of 200 lb. each. Tailing rejected during 
the test was sampled, and assayed by the vat .lis- 
charged. The ore remaining in the vats at the end of 
the test was sampled and assayed by the vat. 

"At the beginning of the tests the solutions in the 
\ats were carefully drawn off. measured, and sampled. 
Tin same was done independently with that in the 
electrolytic tank, and again independently with that 
in the storage tanks. All acid added (commercial 
(Hi* B, sulphuric acid) was carefully weighed as added. 
Additions of water were measured, the condition of the 
solution was daily determined by assay, and on com- 
pletion of the test/complete measurement and assay was 
a ira in resorted to. 

"The electrolytic copper was deposited on copper 
cathodes previously made from the Ray ore by strip- 
ping the deposition on rolled copper sheets. These 
cathodes were removed and weighed daily. The voltage 
maintained at the tank was determined hourly by a 
Weston voltmeter capable of being read to 0.01 volt. 
The amperes were determined both by hourly readings 
of a Weston ammeter ami by checking against the daily 
weighings of a standard copper voltmeter. 

"The heating was done solely in the leaching vats by 
means of closed Lead-pipe coils placed in the bottoms, 
m was supplied to these coils from a main line run- 
ning over the five vats and the condensed water was all 
s cured by connecting the ends of the coils with the 
main drain pipe, the latter itself discharging into a 
ring can. The steam supply was regulated by a 
valve to each coil, as was also the discharge into the 
drain pipe, by another valve. The drain pipe itself, in 
which the condensed water accumulated, was kept 

closed by a valve so that no iincondensed steam could 

"The ratio of volume to surface of the vats employed 
was 3.03. while that of 26-ft, 100-ton vats is 0.4^7. or 
less than 1 ti» In other words, the heat radiating and 
conveying surface of the experimental, plant was over 
six times as u'reat proportionately as would he that of a 
100-ton vat plant. Again, the evaporative surface of an 
operating plant would not be ' ', as great proportion- 
ately as that of the 1 experimental plant, while a con- 
siderable part of the steam condensing surface in the 
experimental plant was outside the vats, thus doing no 

Al.W I ,1 i- ■•■ 



work, while registering as condensed steam. Due 
allowance was accordingly made for these which may be 
summarized as below : 

Copper deposited, total run 40.28 lb. 

Copper deposited, per diem 1.22 

Amount ore in vats 1000.00 

Copper deposited per diem, per ton in vats 

(0.122%) 2.44 

Days required to extract 40 lb. per ton 16.4 days 

Acid consumed 91.4 lb. 

Acid consumed per pound copper deposited.. 2.27 

Ampere-hours consumed 22.3S2 

Ampere-voltage 1.7 

Kilowatt-hours 3S. 1)494 

Kilowatt-hour per pound copper 0.945 

Ampere-hours consumed per pound copper. . . . 556.0 

Steam condensed per pound copper deposited. 33.0 lb. 

Ext raction 80% 

Average temperature of vats 72°C. 

Assay of tailing 0.395 

The Bradley leaching plant at Anaconda has 

Januan I 1914 



••!"-■ -i • l - ■ -vv ■ • having proved ■ failure The various 

other p at ent ed prooeaeee tee ot to have nude nnefa 

headwaj daring the year. The UeKaj proooee, which 
ie ii"w being developed by Archibald Carmiohael, was 
under inveatigation by important intereata, but il ia 

• •I tli;it negotiation! have I n dropped. The 

owners ol thi Alexander proeeaa arc carrying i 

perunenta but have made no report oi progress. The 
id of the Robertson process. The Lrving 
process in elsewhere described by L. s. Austin. The 
leaching of the copper contained in the burned cinder 
from sulphuric acid making is being done in a num- 
ber of places, but is quite a different operation from 
the leaching of raw or roasted ore. In the precipita- 
tion of copper from mine-water, .F. W. Richards has 

■~t <•< 1 that if the scrap iron oscd for lliis pur- 
pose were laid upon sheets of copper, a galvanic couple 
would be established and the surface of the iron kept 
cleaner and consequently more efficient. It is proposed 
to use sponge iron for this purpose in place of the 
usual scrap iron, hut the experiment has not yet been 
made. In conclusion, it may be said that the experi- 
mental work nt Anaconda has demonstrated the possi- 
bility of roasting sulphide tailing at a low cost, and 
the baching plants at the Bullwbacker and Butte- 
Duluth have demonstrated the practicability of sul- 
phuric acid leaching and electrolytic precipitation for 
oxidized silicions ores, with prospects of attaining a 
low cost. It must not be forgotten, however, that 
local conditions create fresh problems at each mine. 

II. Pyro-Metallurgy 

The year 1913 has been made notable in copper met- 
allurgy by the great number of important papers on 
that subject which were called out, largely through 
the efforts of B. B. Thayer and C. W. Goodale. in con- 
nection with the meeting of the American Institute 
of Mining Engineers. These papers contain so much 
nt' interest that it is impossible in the space available 
to discuss them ill any detail. In blast-furnace smelt- 
ing. J. A. Church, Jr.." has described the development 
of the blast-furnace at Great Falls. Montana, to a 
width of 7 ft. R. P. Roberts 7 has discussed the ther- 
mal effect of blast-furnace jackets. The problems of 
blast-furnace smelting at high altitudes has been dis- 1 by Vincente Pazos y Sacio." who points out 
bow the decrease in pressure due to altitude decreases 
I be temperature of combustion within the furnace so 
that "oxidizing smelting in Peru today is nothing but 
pot-roasting carried to fusion at the expense of fuel." 
lie suggests the use of back pressure on the blast- 
furnace, hot blast, and the reducing to a minimum of 
radiation and conduction losses. Herbert Lang has dis- 
cussed" the possibility of the use of crude oil in blast- 
furnace smelting, but no new experimental data have 
been made public during the year. The use of electric 

•Bull. Amer. Inst. Min. Eng.. July 1913. 

-Bull. Amer. Inst. Min. Eng., July 1913. 

'School of Mines Quarterly. July 1913. 

■Alminr/ and Scientific Press. Feb. 8 and July 12, 1913. 

furnaces in thi opp< r ores is b. >< 

vel) studied bj the I nited states Burt i 

Mims ■""! I' A I.m.ii an, I I; M l\ v uli,, ;, r , ,,, 

charge of this inveatigation, presented a preliminary 

paper at the M ana tin- .,! Ill, Instilui- 

a genera] diacuaaion of much interest before the Don 
ver meeting of the Electrochemical Booiety." I havi 
already discussed" this at sum,- length. The met 
allurgioaJ profession is greatly indebted to the Bureau 
uf Mines for undertaking the study of 10 timelj a 
tuple upon a scab- which would nol be praoticabh in 
connection with ordinary metallurgical operations 


Two important papers on roasting have appi 
during the year. s. s, Sorensen lias described" the 
roasting practice at the Steptoe Valley plant, where, 
in order to economize on the heat balance when roast 
ing concentrate low in sulphur, air cooling was substi 
tuted for water by boring holes in the rabble arms and 
blowing air through them, at 2%-in. pressure, by the 
aid of a fan. Oil-firing was substituted for coal, anil 
the lowest hearth was made of cast iron. As a result 
of these improvements the tonnage roasted was raised 
from 50 per day to over 100. ' These are 18-ft. Me 
Dougall furnaces. F. R. Corwin and S. S. Rogers have 
described 14 the carefully conducted experiments by 
which the tonnage of the 16-ft. Evans-Klepetko fur- 
naces at the Great Falls smelter was increased from 
45 to over 100 per day. the limit being apparently the 
mechanical strength of the apparatus. This paper is 
full of valuable experimental data and should be con- 
sulted by everyone interested. I can only mention a 
few interesting points. The tests were first directed to 
merely increasing the tonnage roasted per furnace day, 
and it was found that this could be doubled by sup- 
plying sufficient oxygen, regulating the heat so the 
furnace would not get too hot, and by regulating the 
drop-hole area so as to avoid too great concentration 
of heat and too high a velocity of the gases through the 
drop-holes, which leads to the building up of heavy 
crusts on the roof of the hearths. The maximum pro- 
portion of screened raw ore to concentrate was then 
studied. By the use of compressed air. blown in 
through small pipes placed beneath the roof of the 
fourth and fifth hearths, and about 6% of slack coal 
mixed with the ore in the feed hoppers, raw ore con- 
taining 17%% sulphur could be masted without the 
addition of any high-sulphur concentrate. The next 
investigation was directed ;it decreasing the amount of 
fine-dust made in roasting, with the result that by prop- 
erly proportioning the drop-holes ami by usin<; 'spark- 

■ o'Smelting of Copper Ores in the Electric Furnace,' BuJl 
Amer. Inst. Min. Eng., August 1913. 

"'Possible Applications of Electric Furnace s to Western 
Metallurgy.' read before Denver meeting of Hie American 
Electrochemical Society; see Mining <ni>l Sii'it'ipr /- ■ 
Nov. 1 and Dec. 20. 

^Editorial. Mining and Scientific 1'rrr.s, Nov. 1. 

i»Eng. <t Min. Jour., June 25,1913. 

"Bull. Amer. Inst. Min. Eng., July 1913. 



January 3, lill-t 

catchers' t i prevent incrustations on the hearth rout's. 
the amount of Hue-dual made was reduced from 18% 
:.) about 10% of Hi" weight of the charge. Finally, re- 
inforced concrete was substituted for brick in the 
hearth construction, with the result i hat repairs were 
greatly decreased, and incrustations were more easily 

In the field of reverberatory smelting, the -most im- 
portant paper lit' the year is that of S. S. Sorensen," 
who has given the result of a 3-months' comparative 
test of Sterling and Babcock & Wilcox boilers for the 
recovery of the waste heat of the gases in reverbera- 
tory smelting. This test showed that although the 
Sterling boiler is much more easily cleaned, the Bab- 

i k & Wilcox gives nearly 20% greater efficiency as 

a result of better arrangement of the tubes. I have 
already reviewed" reverberatory smelting practice in 
the southwestern United States and will not again re- 
fer to it here, i Sii this was written the reverbera- 
tory furnaces at the Calumet & Arizona and Arizona 
(upper smelters have been blown in, but none of the 
results attained have as jet been made public.) The 
substitution of coal-fired for gas-fired reverberatories 
at the Great Palls smelter is in progress, but none of 
the furnaces have yet been blown in. Presumably some 
interesting new data on reverberatory smelting will be 
available next year. As usual, L. D. Ricketts has given 
interesting data in his annual report of the operations 
of the Cananea Consolidated Copper Co. During 1912 
the smelter handled 653,595 tons of new copper-bearing 
material at a cost of $2.48 per ton. The reverberatory 
furnace handled 145.970 tons (62,147 tons flue-dust, 
52,541 calcine, and 31,282 tons Miami concentrate) at 
a net smelting cost of $1.66 per ton. The average 
charge per furnace day was 223 tons. These furnaces 
ire 1<> by 100 feet. 


hi regard to the handling of tine ore. there is a ten- 
dency toward the increased use of Dwight & Lloyd sin- 
tering machines, good results in handling the sulphide 
in this way having been attaiued at the plants of the 
Tennessee Copper Co., which is using three machines. 
the Cerro de Pasco, which has six. and the Tacoma and 
Trail smelters, which have two each. The Mond Nickel 
Co. lias recently started a single machine on its fine 
ore. The use of these machines to sinter flue-dust was 
discussed in my review of the subject for last year. 
R. L. Lloyd has publisbed 17 an interesting discussion of 
the criteria of sintering at high altitudes, and brings 
nut the interesting fact that at 14.000 ft. elevation ore 
carrying as high as 25% sulphur can be sintered with- 
out the generation of excessive heat. It is also inter- 
esting to notice that at the nrw Arizona Copper plant 
two mixing cones" will be used to mix fine silicious 

i ■Mining and Scientific Press, Oct. 11, 1913; see comment 
by Hervey Gulich. Mining and Scientific Press, Nov. 23. 

■ •'•'Copper Smelting Practice in the Southwest.' Mining and 
Scientific Press. Oct. 4, 1913. 

>- Mining and Scientific Press, June 14. 1913. 

■^Mining and Scientific Press.' Dec. 13. 

material with converter slag before sending them both 
to the reverberatory furnaces. In this way the excess 
iron in the converter slag is to be made to serve as a 
flux for the excess silica of the fine. Converter slag 
continues ft) be a bugbear and nearly everybody pours 
it back into the reverberatory furnace or through the 
blast-furnace settler so that it will not hurt the pro- 
fessional pride of the technical staff, as it would do if 
allowed to run directly to waste. Where converter 
slag can be chilled and added to the blast-furnaces it 
doubtless serves as a flux, but, except for keeping the 
charge easily fusible, its rehandling offers little. 


Converter practice has changed little during the year, 
except that at the plants where converters of the Great 
Falls type have recently been constructed the workmen 
ami technical staff have learned by experience the de- 
tails of their control. The Pierce-Smith converter has 
apparently regained some of the regard which it seemed 
about to lose last year, and in several plants very good 
results have been attained by its use. Converter prac- 
tice at Great Palls has been described by A. E. Wheeler 
and M. W. Krejci. 18 This should be read by every cop- 
per metallurgist. In the following discussion a number 
of other important points were brought out by other 
metallurgists. E. P. Mathewson 20 described the develop- 
ment of the basic-lined converter and Ralph Baggaley 2 ' 
controverts his statements. It seems but just to believe 
that Mr. Baggaley should have the credit for first suc- 
cessfully maintaining a basic lining and supplying the 
necessary silica by the addition of ore, but his work 
was so mingled with financial disaster and the use of 
impractical forms of equipment that there will always 
exist a difference of opinion as to whether he made a 
success or a failure. None of those who developed the 
basic-lined converter perceived, until after success had 
been attained, that the essential feature is to use a 
large enough mass of matte so that its temperature can 
be maintained and controlled. In an interesting re- 
view of the development of converter practice,- 2 Her- 
bert Haas has pointed out that Paul David deserves 
equal credit with Pierre Manhes for the first successful 
work in producing copper from matte in a converter, 
and draws attention to the fact, too often overlooked. 
that Hollway, in his classic experiments, was not at- 
tempting to make copper from matte, but to smelt 
sulphide ores without the use of fuel. Hollway should 
therefore be regarded as the pioneer in pyrite smelting, 
rather than in converter practice. 

Smelting Mixed Sulphides 

The treatment of complex mixtures of copper and 
zinc sulphides has been described at some length 23 by 

i»BttH. Amer. Inst. Min. Eng., Aug. 1913. 

?"Bttll. Amer. Inst. Min Eng., July 1913. 

"Bull. Amer. Inst. Min. Eng., Nov. 1913. 

^'Development of Converter Practice,' Mining and Scien- 
tific Press, Oct. 25, 1913. 

^Mining and Scientific Press, April 12, 1913; Bull. Amer. 
Inst. Min. Eng., Aug. 1913. 

rj : 1914 

MINING AND SI II Mil li I'KI .s.s 


S K who propMM to use, at Ingot, Shasta 

Bounty, California, the Schnabel proeeaa of extracting 
/mi- aa aside from Iha roasted on bj the nae of am- 

in ■ and aarbonie acid, smelting the leashed ore in 

a reverberator; furnaoe II Bofman baa pointed 
..Hi • that tins proeeaa waa tried at Lantenthal, in the 
Mar/, mountaina, and at Rnhohnn lna Anvorn. with tin- 
r.-Miit that it «as found impoaaibla to aompete with re- 
tort distillation \v Me \. Johnson has announced the 
■ueeeaaful eoneluaion of ■ large amount of experi- 

mental work which be has done at Hartford. Coi oti- 

rut. in developing a tinuoua sine furnace in which 

the sine is distilled .>tT. while the copper nr lead present 
is drawn off as matte or bullion. It is expected that 
one of these will be put in operation in California 
during the coming season, and the comparative results 
of ths two methods will be watched with the keenest 

Smelter Fume 

The event of the year in advancing toward the solu- 
tion of the smelter fume problem was the announce- 
ment** that the Hall proeess for the. roasting of sul- 
phides without the production of SO, was to be tried 
at the smelter of the First National Copper Co.. Shasta 
county. California. This process consists in so con- 
trolling the temperature and admission of oxygen and 
steam into a roasting furnace of the McDougall type 
thai the metals are oxidized while the sulphur is not. 
hut distilled off and caught as Mowers of sulphur. The 
early experiments were handicapped by troubles with 
the gas-producers used for making gas from crude oil. 
hut these have been overcome and the outlook for 
eventual success seems bright. J. Nelson Nevius has 
published 1 " a thoughtful study of the conditions in 
Shasta county. California, made for the Los Angeles 
Chamber of Mines and Oil. Edgar M. Dunn has de- 
scribed" the methods for the determination of the gases 
and dust in smelter flues in an important paper. James 
Elton" described the methods of the recovery of As^Oj 
from fiue-du8l practised at Anaconda, and C. W. Good- 
ale and J. II. Klcpinger have published 20 a detailed de- 
scription of the Great Falls flue system and chimney. 
which is full of interesting details. The metallography 
of refined copper has been discussed by E. S. Bard- 
well."" The electrolytic refining of copper is mentioned 
elsewhere in this issue. 

Actual progress, it is but fair to say. in the metal- 
lurgy of copper has probably not been much more rapid 
this year than in preceding ones, but the year has been 
made a red-letter one by the generous way in which 
metallurgists have contributed from their experience 
to advance the general good. 

HBull. Amer. Inst. Min. Eng.. Nov. 1913. 
-'■Mining and Scientific Press, July 5. 1913. 
-'■Mining and Scientific Press. March 8. 1913. 
"Bull. Amer. Inst. Min. Eng.. Aug. 1913. 
■ »lMd. 
™Ihid.. July 1913. 

Electrometallurgy in 1913 

Bj G \ i;..i mi 

'I'h. advances in the various lines oi electrometaJ 
lurgj arc so numerous, s.. diverse, and so widely scat 

tend in the literature, that in the pr.parat of a 

rcvicu of this kind, all on.- can hope to do is to select 
sonic of the more striking discoveries in the more 
important fields to serve as illustrations of the gen 
eral trend of tlie industry. What the breadth of these 
advances has amounted to, as measured from time 
to time, can probably be fully appreciated only when 
one considers the enormous development of electro 
metallurgy as it stands today, and measures up againal 

it th imperatively short span of years through winch 

this development has extended. By thus setting up 
the milestones, as it were, one secures a better idea 
of the general perspective into which this brief sketch 
of recent progress must fit. 


So far as the current literature shows, there are 
no copper ores being treated at the present time in 
the electric furnace in this country. Trial smeltings 
of copper in a 1000-hp. furnace with an estimated 
production of 2000 tons per year have been reported 
from the Ben Smelting Works at Trondh.jem, Norway. 
but no detailed data concerning these experiments 
have been found. . 

An article in Elec. Her. West. Elec? describes electric 
copper smelting tried at Globe, Arizona. Test runs 
showed an extraction of 98% of the copper con- 
tent of the ores. The furnace was of the vertical- 
shaft resistance type, 6 ft. in height, and lined with 
magnesia bricks. The opening of the furnace was 22 
in. diameter at the top and 20 in. at the bottom, with 
a 5-in. Acheson graphite electrode swung at the top 
and a stationary electrode fixed at the bottom. Heat- 
ing was started by an arc. and continued as resist- 
ance heating as soon as the charge was sufficiently 
melted. The power required was 3500 kw-h. per ton 
of charge. 

Stephan 2 gives an account of experiments on the 
reduction of copper and nickel in furnaces similar to 
the (Jirod steel furnace. It was attempted to reduce 
a copper oxide ore high in silica and carrying some 
iron and cobalt, using solid carbon as a reducing 
agent, and limestone as a flux. A continuous run of 
several days resulted in a power consumption of 100ft 
to 1200 kw-h. per ton of ore. This figure is high on 
account of the high temperature recpiired to keep the 
very viscous slag fused. With a more easily fluxed 
ore, the power consumption was as low as 500 kw-h. 
Charcoal, coke, and anthracite, to the extent of 25% 
of the copper in the charge, were all used successfully 
as reducing agent. The pig copper produced carried 

i Volume 63. page 636. 

"-Metail u. Erz. Vol. 1". pp. 11-17. S4-M1: Uet. Chem. Eng., 
Vol. 11. pp. 22-23. 



January 3, 1914 

65 to 95% Cu, 1 to 21% Fe, and 1 to 11% CO, depend- 
ing hi the temperature conditions in the furnace. The 
lower the temperature, the smaller was the amount 
of impurities reduced, hut the larger the loss in un- 
reduced copper. 

Lyon and Keeney 3 report a series of experiments 
on the smelting of copper in the electric furnace. Ex- 
pei intents on sulphide ores, where the smelting con- 
sists simply in melting down the ore, volatilizing out 
sulphur, and separating the slag and matte, indicated 
that in a furnace of commercial size the power con- 
sumption would he ahout 480 kw-h. per ton of ore for 
a lnw-grade ore producing a matte carrying 1.22% Cu. 
There was some loss of silver by volatilization, but 
vriy little gold or copper. The authors conclude that 
the smelting can be done as efficiently in the electric 
furnace as in the reverberatory or blast-furnace, and 
the desired reactions can be carried out as satisfac- 

This does not include patents granted on a number 
of different forms of electric furnace, and various 
eleetrometallurgical processes, concerning which noth- 
ing is known outside of the patent claims. 

On the whole, the problem of the electric furnace 
reduction of copper seems now to be on about the 
same ground as the electric furnace reduction of iron 
was a few years ago. It is largely a question of the 
substitution of electric heating for carbon heating, 
which means that it is largely a question of the com- 
parative cost, at a given locality, of electricity and 
coal or coke, and the relative efficiency with which 
they can be utilized. The electric furnace under 
these conditions is not the competitor of the combus- 
tion furnace, hut a substitute for the combustion fur- 
nace under certain conditions. 

Electrolytic Refining 

Burns' describes experiments on the electrolytic re- 
fining of copper precipitate anodes. About 1400 tons 
of copper precipitate was melted down in the rever- 
beratory furnace, about 25% of the charge being an- 
ode seraj). etc. The results showed that wire bar cop- 
per could be produced from these anodes at a current 
density of 17 to 18 amperes per square foot, while 
ingot ijrade copper is produced at a current density 
of 33 to 35 amperes per square foot. 

Peterson* describes the leaching process of the Butte 
& Duluth Mining Co., Butte. Montana. These ores are 
oxidized varieties, carrying about 2% Cu. readily sol- 
uble in dilute sulphuric acid. Leaching with 10% 
acid for 24 hours dissolves the copper from the ore, 
and the acid solution is then electrolyzed. recovering 
the copper and regenerating the acid, which can then 
be used for further leaching, 'after the addition of 
sufficient acid to restore the. original concentration. 
and make up for losses throughout the process. This 

*BuU. No. 80, Amer. Inst. Min. Ens., pp. 2117-2149. 

'Bull. No. 79. Amer. Inst. Min. Ens., pp. llfi:: 7: Min. Enn. 
World. Vol. 39. pp. 469-70. 

■-Min. Enrj. World, Vol. 39. pp. 423-5. 

amounts to ahout '3y 2 lb. of acid per pound of copper 
recovered. The power used is about 1 kw-h. per 
pound of copper. The copper produced analyzes about 
99.96% pure. 

Then ther% is the sulphatizing roasting of copper 
ores, followed by leaching and electro-deposition. Sul- 
phide copper ores are roasted under conditions giving 
a maximum formation of sulphate. In this way 93 to 
95% of the copper content of the ore can be made 
soluble in dilute sulphuric acid. The acid leach solu- 
tion is then electrolyzed for the recovery of the cop- 
per and the regeneration of the acid, which can then he 
used for further leaching. 


Of all the different metals that are being treated by 
electro-metallurgical processes, probably none has been 
the subject of more discussion than zinc. Iron and 
steel take precedence over zinc only in the importance 
of the greater tonnage involved. Zinc secures this 
attention because of the proportionately small amount 
of progress that has been made in recent years along 
the lines of the present standard methods of treating 
zinc ores, and the possibility, not only of developing a 
process that can be run at a better efficiency than the 
present pyro-metallurgical methods, but also the possi- 
bility of securing a method of treating ores that can- 
not be treated at all by the present methods. And it is 
in this latter field that the electro-metallurgy of zinc 
promises the most satisfactory returns, at least for 
the immediate future. Numerous patents on furnaces 
and processes have been granted during the past year, 
but as little is known concerning most of these, be- 
yond the claims stated in the patent, I will confine 
myself to the various publications of the past year 
giving the results of experimental work and informa- 
tion in regard to the general condition of the electro- 
metallurgical side of the zinc industry. 

Uebbing describes two methods of working a zinc- 
bearing burned pyrite. The first method was by 
a reducing smelting in an electric furnace, using CaO 
to assist in slagging the sulphur. Most of the zinc 
was volatilized from the charge, and the iron was 
obtained as pig iron. In order not to have too much 
sulphur in the pig iron, it would be necessary to reduce 
the sulphur in the raw material to less than one per 
cent. The second method consisted in reducing the 
sulphur by further roasting, briquetting the pulverized 
material with tar or pitch, and heating. A prelim- 
inary baking produced a part reduction, and subse- 
quent heating in a vacuum furnace at 1000 to 1100° 
reduced all the iron and distilled out the zinc. 

On account of the low cost of power, the Scandina- 
vian countries have progressed further in the commer- 
cial application of electric zinc-smelting than have any 
of the other countries. There is one plant in Sweden, 
one in Norway, and it has been recently reported that 
a plant has been started in Finland, using 2500 hp., 

■Mi tall ii. Erz. Vol. in. pp. 1 and 607-611. 

Januarj : I'll 

MIMV. WD SI II \ I II I- I'KI s-, 

whu-h ■ to I..- later reaaad t.. 6000 i m , i„ ii,. 

■'■' it is stated that the Sulphide 

>ration hat oonstructed nt Cockle Creek, New 
South ' hp. eleotrie fornace for the elec 

trie smelting of una, i 1 .1 with the manufacture 

»f lulphurie acid and raperphoaphate 

report of the directors of the Hydraulic 

Power A Smelting Co . Ltd., gives the following infor- 

i.l to Scandinavian lino smelting. The 

it} of the works at Sundlokken (Sharpaborg . 
Norway, has been increased from sooo i,, tons 

per year, and contracts for the Bale of tl otire oom- 

ing year's production have been mad.' under terms 
giving .i satisfactory profit. The erection and equip- 
ment ill" a new plant at Trollhiittau. Sweden, is 1 m- in ir 

pushed as rapidly as possible, and 13 Furnaces of 1000 
hp and B of 500 hp, have been installed. Five more 
1000-hp furnaces will be built. 

Thi- problem of electric sine-smelting is being stud- 
ied in Canada under the direction of Stansfield and 
Ingalls. under a grant from the Canadian Government, 
hut no recent publications have been made by them. 
The leading investigators in this country are Johnson 
and Peterson, both of whose processes are described 
in considerable detail in papers presented at the 
Denver meeting of tin' American Electrochemical So- 
ciety, September 1913." 

Zinc Smelting Near 

While there have been no radical improvements in 

tin- various processes for the electric smelting of zinc 
during the past year, tin- gradual advance of the ex- 
perimental and semi-commercial processes that are be- 
ing tried out seems to lead to the conclusion that for 
complex mi's, where the recovery of the zinc must be 

a mpanied by the simultaneous recovery of copper, 

lead, silver, and gold, electric smelting processes show 
decided possibilities. After considering the various 
sides of the question, Ingalls comes to the conclusion 
that if the zinc can be smelted with an expenditure 
of not more than 1200 kw-h. per ton of ore, the elec- 
tric smelting processes will become a possibility worth 
considering. Johnson, in the article cited above, pub- 
lishes values of kilowatt-hours per ton ranging from 
1100 to 1700. and expects to secure still better results 
with further development of his process, and, with 
larger size furnaces. Peterson figures on a basis of 
1400 kw-h. per ton of ore. 

All things considered, the electric smelting of zinc 
seems to be a commercial possibility of the near fu- 
ture. The fact that the zinc can be reduced, and that 
the other metals of the ore can be satisfactorily recov- 
ered, have been already shown. The principal things 
n in lining to be done are, first, to control the con- 
densation of the zinc vapor so that a satisfactory per- 
centage of it is condensed as metallic zinc, instead 
of blue powder, and second, to control the furnace 
operation so that iln- cost of replacing electrodes does 

'May 22, 1913, abst. Met. Chem. Eng.. Vol. 11. p. 4fi3. 
'Trans. Anier. Electroehem. Soc, Vol. 24. 

noi exceed the | and i di 

Iron and Steel 

Tin- electric reduotion of Iron ia certainly no lo 
in tin- experimental stage Ii is meeting tin- require 

ineiiis in the localities where it has I q Introdu I 

and lor some uses tl I. -cine furnace produi 

more suitable lal than ihe blast I'lirin For .-\ 

ample, electric-furnace pig iron oan be made i h 

low.-r in impurities than ordinary blast Furnace pig 

iron, which makes it iiuc-h easier ti overt into 

steel ill the open-heart h furnace. 

The electric iron-smelting furnace at Trollh&ttan 

lias, a riling lo a writer in /-.'».;.■ been modi 

tied in use round electrodes 600 mm. iii diameter, and 

an apparatus has also been added lo purify Iln- gas 

by washing. The furnace used 1749 kw-h. to prod 

100(1 kg. of iron, an efficiency of 74.39%. The con- 
sumption of charcoal is only 35 to 45% of that re- 
quired in the blast-furnace. Prom results secured at 
Trollhattan it appears that the electric furnace is sub- 
ject to greater variations than a well run blast-furnace 
and that the sulphur content of the iron is higher. 

As a result of the successful operation of the Troll. 
hattan furnace, three other furnaces have been built 
in Sweden, the four using 12,000 hp. ; in Norway there 
is one 3500-hp. furnace in operation, and three 3000- 
hp. furnaces are under construction: in Switzerland 
a 2500-hp. furnace is being built; these, with the two 
California furnaces, one of 2000 hp. and the other of 
3000 hp., make a total of .'12.000 hp. for use in the 
electric reduction of iron. 

Lyon"' compares Scandinavian practice with the 
electric iron furnace with California practice. The 
main differences are that in California no attempt 
is made to secure any reduction in the stack of the 
furnace, there is no circulation of the furnace gases, 
and the limestone used is calcined outside of the fur- 
nace. Further details on the operation of the Cali- 
fornia furnaces are given by Crawford". The mini- 
mum power consumption under present working con- 
ditions is given as 2200 kw-h. per ton of pig iron. The 
efficiency is not quite so high as the Swedish shaft- 
furnaces of the same power rating, but the extension 
of the length of the furnace is expected to remedy this. 
since the end electrodes work at a lower efficiency 
than the electrodes in the centre of the furnace, due 
to the increased radiating surface. 

The size of the units in use is constantly increasing 

Most of the Scandinavian furns a are rated at 3000 

hp., but it is reported that the A. B. Elektromctall 
has completed the design of a 7500-hp. furnace. The 
California experiments have led to the development 
of a furnace rectangular in shape, with the electrodes 
in a straight line, and it is thought that it will In- 
possible to increase the length of this furnace indefin- 

•Vol. 94, pp. 395-7 and C30-5. 
io,W?<. Chem. Eng., Vol. 11. pp. 15-19. 

"Mining and Scientific Prenn, June 28; Met. Chem. Eng.. 
Vol. 11. pp. 383-8. 



Jamiarv 3, 1914 

ili-ly, as has been done with the modern rectangular 
copper blast-furnace. 

A good summary of the present status of the elec- 
tric furnace in smelting of iron ores is given by Lyon 
and Keener in their paper,'- 'Possible Applications ef 
the Electric Furnace to Western Metallurgy,' present- 
ed at the Denver meeting of the American Electro- 
(•lumical Society in September 1913." 

The principal advances in the electro-metallurgy of 
steel are along the line of increased size of furnaces. 
.uid better control of the furnace operation, giving 
greater capacity and more thorough purification of 
the charge. An induction furnace of 25 tons capacity 
hag recently been constructed in Germany. The electric 
furnace is also proposed as a holder for melted steel. 
•_ r i\ ing the steel time to clear itself of gas and slag be- 
fore it is east. 

The number of electric steel furnaces now in oper- 
ation are as follows: Europe. 112: United States, 19. 
The production of electric-furnace steel is rapidly in- 
creasing in Europe, the 1912 production being about 
11.000 tons more than the 1911 production. In the 
United States, however, the production has decreased 
about the same amount in the same time. 

The Societe le Fer" effects the removal of the hy- 
drogen in the production of electrolytic iron by add- 
ing to the bath Fe.,0,. which is reduced to FeO. Iron 
of high quality is obtained with a current efficiency 
of 95 to 98%. even with current densities as high as 
100(1 amp. per square metre. 


The growth of the ferro-alloy industry in the United 
States has been much slower than in Europe, this 
country having only two plants using electric-furnace 
processes, compared with 25 in Europe. This makes 
the production of the ferro-alloys, particularly of 
manganese, silicon, and tungsten, of interest in this 
country, since the production is not sufficient to meet 
the demand, and large quantities are imported annu- 
ally, while the growing importance of high-grade and 
alloy steels is making these alloys of continually in- 
creasing importance. The production of ferrochrome, 
ferrotitanium. and ferrovanadium is sufficient to meet 
the domestic demand. The principal reason for the 
more rapid growth in Europe is the fact that power 
can be obtained cheaper than in this country. Ores 
of chromium, tungsten, molybdenum, and vanadium 
arc found in the western United States in sufficient 
quantities to make further development of ferro-alloy 
manufacture well worth while. Keeney 1 " gives the re- 
sults of a series of experiments in the manufacture 
of the various ferro-alloys in the electric furnace. 
Floge" describes the use of art electric furnace for 
melting the ferro-manganesc used to de-oxidize steel. 

'^Mining and Scientific Press. Nov. 1. 

■•See also Mining and Scientific Press. Dec. 20. 

>«Fr. Pat. 446.614, Oct. 6. 1911. 

"Trans. Amer. Electrochem. Soc, Vol. 24. 

"■•f'nrm. y.eit.. Vol. 36. p. 307. ' 

resulting in a saving of 35% of the amount required 
when it is added in the solid form, besides giving uni- 
form quality of metal and saving considerable time. 
Bingham 11 patents the production of ferrosilicon using 
as a raw material scrap silica bricks from the lining 
of open-hearth furnaces, that are partly saturated with 

Gold and Minor Metals 

The electric furnace has not yet been applied to 
the working of gold or silver ores, although there are 
conditions under which this might be advantageous. 
There has recently been installed at Lluvia del Oro. 
Chihuahua, Mexico, a furnace for the electric smelt- 
ing of the zinc precipitate from the cyanide plant 
and smelting ore concentrates. The bullion is shipped 
and the slag is re-smelted or concentrated. 

The electric smelting of straight lead ores has not 
been attempted, largely because of the ease with which 
these ores can be handled in combustion furnaces. 

Working in a small furnace. Stephan' 8 reduced from 
an ore containing 8.33% NiO 350 kg. of ferro-niekel. 
carrying 4.33% Si. The power consumption was about 
2000 kw-h. per ton of ore. which could probably be 
reduced to about 1200 kw-h. in working. 

The increased use of platinum in jewelry makes it 
desirable to have a small furnace capable of melting 
over scrap to recast into ingots. In Brass World™ a 
small 'Hellberger' furnace is described. This is a 
small electric furnace with a removable crucible, tak- 
ing 110 or 220 volts, a special transformer cutting this 
down to the desired voltage. One kilogram of plati- 
num requires 10 kw-h. for melting. 

Particulars concerning some experiments made by 
the Grondal-Kjellin Co., of London, in smelting tin 
ores in Cornwall, are contained in the Revue Indus- 
Irielle. Pure ores yielded metal of 98% purity, and 
Bolivian ores containing about 50% of tin and 15% 
of iron gave metal of 92 to 'Xl"< purity. The latter 
could be further refined to a purity of 99.75% by 
blowing aii- through the molten mass. The energy 
consumed was 1700 kw-h. per ton. but this may be re- 
duced to 1400 kw.h. with an efficiency of 55% by using 
two furnaces; one for the production of high-grade 
metal and the other being used for the treatment of 
rich slags. ; " 

Midland and Delasson-' patent the electrolytic re- 
fining of tin in a SnCU solution carrying some MgCl. 
and II,BO,. The tin-bearing material is placed in a 
fiat porous basket that serves as anode, and the cathode 
is a copper plate, from which the deposited tin is 
removed by scrapers. In order to keep the electro- 
lyte saturated with tin, it is circulated through a con- 
tainer filled with tin scrap. The yield is 2.22 gm. of 
tin per ampere-hour. 

"Brit Pat. 22,755, Oct. 16, 1911. 

lajfetoll u. Erz. Vol 10. pp. 11-77. S4-86: Met. ('hem. Enu. 
Vol. 11, pp. 22-23. 
lOVol. 8, p. 273. 

=°Me«. Chem. Ena.. Vol. 11, p. 653. 
"Fr. Pat. 435.936. and addition 16.388. Aug. 24. 1912. 


Metallurgy of the California Mother Lode 

Bj M \V VON Hi. km WITZ 

A general impression exists thai ore treatment along 
thr Mother Lode is aadlj behind the times. During 
mbcr I visited all the operating mills from Ama- 
dor Citj to Jaek8on, and must confess thai I was agree- 
ably surprised, an. I >.. far as my own observations 
:.■.• I consider the genera] impression unjustified, lie- 
lamely little has been written in r» nl yean regard- 
ing ore treatment along the Lode and the following 
general resume 1 ma] therefore prove useful Except 
where stated otherwise, my observations relate only 
to that i>art found in Amador county. For a com- 
plete understanding of the Mother Lode of California. 
I would refer the reader to the interesting articles of 
J. II. Q. Wolf, in this journal of June -l and 28, 1913. 

The on-, which is mined from all depths to -Hon ft. 
on the incline, may be described as a quartz contain- 
ing from 1 ."> to •'!•; iron pyrite. It occurs mostly in 
graphitic slates or schists. While ore averaging as 
high in value as *T per ton is produced from one mine, 
the general average is said to be about $4 per ton. 
Ore as low as $3 per ton may he profitably mined ami 
milled. The ores of Bendigo, Australia, are very simi- 
lar to those of Amador county, save for the arsenic 
in the Bendigo sulphides. The treatment is precisely 
the same, only that the Mother Lode mills are more 
up to date. 

A General Review of the Milling Practice 

Moth vertical and inclined shafts are found along 
the Lode. Tie- angle of the latter is never very flat, 
and skips up to 4-ton capacity are used. Rock-crush- 
ers, mostly of the jaw type, are placed on storage Wins 

near the shafts. A noticeable feature is the complete 

absence of any belt-conveyors from these bins to the 
mill-bins, cars holding up to 4 tons moved by man or 
mule power being used. While it is true that in some 
instances the shaft-bins are a considerable distance 
from those at the mills and long belt installations are 
expensive, yel their total absence is marked. The cars 
of ore at the Argonaut are weighed. Elsewhere they 
arc merely counted and a constant weight assumed. 
Mill-bins are all built with sloping bottoms, and there 
arc three types of battery frames, namely, the front 
knee, 'A.' and standard construction. These seem to 
be about equally popular. With the first named, the 
main drive-shaft is level with and in front of the cam- 
shafts, the arrangement necessitating tight belts. Ten 
stamps are driven by each belt, and the driving pul- 
ley is driven by a clutch. King posts and other tim- 
bers are of the regulation pattern. Feeders are of the 
suspended and hopper Challenge types. Mortar-boxes, 
stamps, and other machinery made by many well 
known engineering firms is found in the various mills, 
but the local firm of Knight & Co., of Sutter Creek. 


seems to have the lead in supplying mill machinery. 
It also makes hoists and other surface equipment. The 
average weight of stamps used is probably !»50 lb. 
There are several mills, however, where the weight is 
as much as 1050 lb. The quartz ore is friable, and 
when slate is mixed with it. the average is sol't. so a 
light stamp with a 0-in. drop, falling 95 to 104 per 
minute, is sufficient to do the work. It has a capacity 
of four to five tons per stamp-day through a 20-mesh 
screen. In the new 300-ton mill for the Plymouth 
mine, on the same vein system, 12 miles from Jackson, 
heavy stamps and a two-stage system of crushing with 
classification is to be installed, so interesting compari- 
sons will be possible later. Hoth inside and outside 
amalgamation is practised, but although in some mills 
quicksilver is fed into the mortar-boxes, there arc 1 no 
inside plates. There is also a wide variation in prac- 
tice regarding copper plates; one plant will have only 
a short plate, while others have sluice plates up to 
20 ft. in length. With one exception, the Original 
Amador, no classification whatever of pulp from the 
stamps is made. I was informed that it had been tried 
often, but without improvement in results. The pulp 
from each battery of five stamps is divided evenly be- 
tween two or three Frue vanners. It is peculiar how 
the milkmen in different mining centres, almost as if by 
agreement, find one particular concentrating table to 
suit conditions best here the Frue type is most favored. 
The only other type is the Deistcr, there being seven at 
the Original Amador. The 6-ft. Frue vanners give 
entire satisfaction, and they are certainly skilfully 
operated. They arc driven at from 180 to 200 strokes 
per minute, and the belt travel is from 2 to 6 ft. per 
minute. As with all ores containing pyrite, a consid- 



January 3, W14 

erable amount of Sue mineral escapes with the tailing, 
and strenuous efforts are made to catch this by canvas 
plants of many kinds. For many years the tailing has 
been allowed to flow down the different creeks in the 
district, but as the farmers on the lower lands com- 
plained of drainage, arrangements are now being per- 
fected for its disposal otherwise. 

To the natural question why tailing is nut cyanided 
along the Lode, it would he safe to say. generally, that 
it is doubtful whether it could be made to pay. It is 
true that a small plant is treating the tailing from the 
Hunker Hill mill, but under conditions that would not 
be profitable to a company. Both local and outside 
men have sampled and experimented on the mill 
residue, and intend daing so again; but residts have 
not proved favorable. I think that the main impedi- 
ment is the graphite in the slate or sehist. which is 
crushed with the ore. In eyaniding. this mineral 
causes a premature precipitation of gold from solu- 
tions, which is not recoverable. It is held by Stuart 
Browne that it is the occluded •rases in the mineral 
that causes the precipitation. Even so, the fact re- 
mains that the graphite, or something in it not yet 
determined, and which is probably not to be com- 
mercially removed, gives trouble. The proof of this 
may be seen at the cyanide plant of Messrs. Harrow 
& Fitzsimmons treating the tailing from the Bunker 
Hill mill, where a great deal of graphitic scum is Been 
floating about, and recovery was reduced very consider- 
ably lately: due, without doubt, to this mineral. It is 
said that greasy slates in the mines will form this scum 
also, and possibly may give trouble. Strange to say. 
the addition of caustic soda to the charges of sand in 
the leaching vats, greatly improves extraction. Graph- 
ite is a stable mineral, and would hardly be changed by 
adding this alkali, yet its addition has been beneficial. 
Tailing from the mills is certainly rich enough for 
treatment if there was no deleterious matter in it. 
Perhaps, however, the extreme fineness of the min- 
eral escg ling the vain rrs and ear Iras dants l revents 
its being caught whei. lea 'bed as . and The ) roblem 
is interesting, and before long there will undoubtedly 
be further work along this line. 

All the mills are situated from two to four miles from 
any railroad terminus and concentrate has to be hauled 
over rough roads for shipment to smelters. The Ken- 
nedy Mining & Milling Co. treats its concentrate by 
ehlorination, but. there would seem to be a field for a 
central custom plant, since the cost of treatment need 
not In- much more than the $2 per ton freight rate to 
tin' smelters. The concentrate contains practically 
gold only, and with good mechanical roasting furnaces. 
grinding, amalgamating, and finally eyaniding. a 
high extraction at reasonable cost should be made. I 
understand that the average extraction of gold in the 
mills by the present methods is S2% and the cost 50 
to 55e. per ton. 

Where steam is required on the surface for power. 
oil is used for furl at a cost of from 9fle. to $1.25 per 
barred. All the mills and small outlying plants are 

motor driven, electric power from the 'Eleetra' hydro- 
electric power-station of the Pacific Gas & Electric Co., 
eight miles away, being supplied at $4.50 per horse- 
power month. Water costs 15c. per miners inch per 
month: yet no attempt is made to return waste water 
to the mills. Probably this will be done when some of 
the tailing impounding systems are in operation. The 
stamp-mills are all well kept, which is always an im- 
portant point not to be overlooked, and the labor re- 
quired is small. 

Fremont Mill 

The Fremont mine is worked by two shafts, 1500 and 
2100 ft. deep, respectively, and produces 6000 tons of 
ore per month. At each shaft is a crusher; one jaw 
crusher and one of Gates type. The broken ore is 
conveyed several hundred feet by mule traction to the 
mill-bins. The battery frame is of standard design, 
and suspended feeders supply ore to 40 stamps drop- 
ping 6 in.. 105 times per minute. Guides made by the 
Qlobe Iron Works of Stockton, and Blanton cams are 
used. The inortar-boxes are from the Union Iron 
Works of San Francisco. A 75-hp. motor is belted to 
the main drive shaft, and jockey pulleys keep the cam- 
shaft belts tight. The stamps crush through a No. 6 
slotted screen, and outside amalgamation is practised 
on long plates. Sixteen Frue vanners save the concen- 
trate and are driven by a 20-hp. motor. This mill is 
exceptionally well kept. 

The tailing from the vanners is sold on a royalty 


1 1 ) Central spindle gear or rope driven on footstep bearing; 
(2) Tie or stiffening rods; (3) canvas or felt sloping 
trays; (4) annular feed launder; (5) tailing launder; (6) 
spray pipes. 

basis, and is treated on a revolving canvas plant. In it 
are two 24-ft. slowly revolving machines, with several 
sloping decks about 12 in. apart. The distance from 
the central spindle to the inner periphery of the deck, 
which latter is about 4 ft. wide, and divided into 4-ft. 
sections, is 8 ft. Pulp from the mill is fed upon these 
decks at the inside periphery, and thence flows across 
to an annular launder. The decks are either covered 
with canvas or felt, which catches fine mineral escaping 
the Frue vanners in the mill. At one side of the canvas 
huddle, or revolving canvas strokes, is a vertical 2-in. 
water-pipe, to which are fitted short %-in. spray pipes, 

JUMH 1. I'M I 



■n. f..r tni-ii desk, manipulated by ■ rrmik in nob " 
way that ths sprays wash the Bn< mineral off each 

SSetfclll iw H cones I" ill.- proper point. Before Iliat 

imrt reach.* tins point tin pulp flovi is stopped mi the 

ii before Iii tins particular plant, after the oon- 

eeotrate i* waabed off the machines, it is elevated t" i 

machine for n oeentration, tin- tailing being re- 

tuniril again to the first '.'4 ft maehine. The line eon 
eentrata is abipped to smelters. During tin- night this 
plant nniM irithont attention, being motor driven and 
everj thing alow moving 

Bunker Hill Mill 

Next along the line of tin- Lode is tin' Bunker Hill. At 
Hie .shaft is a jaw-eruaher ami 3-ton ears arc trammed 

by hniul several hundred feet to the 40-stamp mill 
bins The framinir is of the 'A' type with the main 
drive-shaft behind the mortar-boxes, this shaft being 
driven by a ~>0-hp. Westinghouse motor. The stamps 
and the boxes were made by Knight & Co. of Slitter 
('reek and are of the usual type. Punched sereens are 
used, and amalgamation is both in the mortars anil on 
long plates outside. Twenty-four ti-ft. Frue vanners, 
three to each battery, save the eoneentrate. which is 
shipped The pulp from the concentrating tables then 
Mows to Darrow & Fit/simmons cyanide plant. Here 
it is first of all cleared of rubbish by a revolving screen 
driven by a small water-wheel set in the pulp launder, 
the flow of the pulp turning this with ease. The pulp 
runs from this to cone classifiers, the underflow going 
to c ight 12 by 16-ft. wooden leaching vats, about 80 
tons being treated daily. Lime is generally used to 
neutralize any acidity: hut on account of recent 
troubles, due apparently to premature precipitation 
bj graphite, caustic soda is being tried with good re- 
sults. Pulp from the canvas plant drives the dis- 
tributors above the leaching vats. Pyanide solution 

washes are for 1 up through the charge or on top as 

desired. The total time in treating one vat is ten days. 
sftel which tli residue i sluicei down tl ?. creek. 
The overflow .'r.-m the com , v./ two 30-lt. diam- 
eter revolving machines with eight decks each, having 
a total of 11)8 canvas trays with a fall of 1% in. per 
foot, similar in operation to the one shown in the 
sketch. Feed is stopped two trays before the final 
spraying, and these arc given a clean-water wash, leav- 
ing only fine clean concentrate to lie sprayed off. The 
preliminary handling of pulp from the mill launder is 
to be somewhat altered in a short time, by the installa- 
tion of new cones above two new 10-deck machines 

with 140 trays covered with asphalt-felt, painted and 
sanded. These machines will be centre-fed over um- 
brella-shaped plates, instead of being fed on the inside 
periphery. The mechanism will also be different, as 
the decks of trays will revolve independently of the 
central feed arrangement. Generally speaking, this 
new maehine bids fair to be the lust word for this class 
of work. 

Concentrate washed off the present machines Hows to 
three small Pachuca tanks, which hold 188 eu. ft. of 

charge per tank, the pulp being fed down a 8 tl boat) 

and clear water Overflowing by an annular launder. 
About six tons ..I OOneentratfl and line sand is caught 
daily. When the vat contains the required charge, 
lime is added .it ..nee. then the whole is given a Violent 
agitation with air. allowed to settle, and water 

siphoned off. Strong cyanide solution is then added. 

anil agitation pr .-.Is f.m eight hours and settlement 

for four hours, when the solution is decanted to sand 
Altera. The treatment is limply air agitation and dc- 

cantatioii covering a total of 72 to 80 hours. All solu- 
tions are well aerated by a pump and tower. Qold- 
bearing solutions are precipitated by sine shaving in 
small tubs, seven rows of live each for strong, and 
four rows of five each for weak solutions. Barren solu- 
tions go to three 30-tOD wooden sumps. In cleaning up 
the zinc-boxes or tubs, the zinc is washed, the sludge 
given a sulphuric acid treatment of '_'4 hours, and 
chlorinated by adding salt, manganese dioxide, and 
potassium permanganate for 48 hours. Gold is pre- 
cipitated from chlorine solution by ferrous sulphate, 
filtered, dried, and melted: the resulting bullion is of 
high grade. Only a small number of men are needed 
at this plant, and being interested in it. they work 
long hours. While proving that a certain recovery 
Can be made by evaniding the sand and fine concen- 
trate, it is generally believed that not much profit is 


Original Amador Mill 

The Original Amador, opened to 700 ft. by an in- 
cline shaft, is at the edge of Amador City. One and a 
half-ton skips feed tin- jaw-crushers above the mill- 
bins, and the broken ore is fed to twenty 1000-lb. 
stamps. These drop 105 times per minute and crush 
90 tons per day through a 20-mesh wire screen. The 
battery frame is of standard design, and the boxes and 
stamps were made by the Joshua tlendy Iron Works of 
San Francisco. A 50-hp. motor drives the main shaft 
behind the bo: es. Both in/ide and outsi le amalgama- 
tion is pracl si I. the lattn being on p. a.ea 4 1 L . by i 1 
ft. in area. Pulp from the plates is classified, this 
being the only plant along the Lode where it is done. 
The coarse pulp Hows to four Deleter tables, and the 

overflow from the classifier goes to ; ther cone, the 

underflow from which is treated by three Deister 
tallies. .Middling from the fine tables goes to a Frue 
vanncr running at 85 strokes per minute, and the clean 




January 3, 1''14 

pyrite is pumped to a tank, drained, and shipped. 
Classification has proved to be an advantage in this 


South Eureka Mill 

Between Amador City and Sutter Creek are several 
old mills which are not working-, and which have the 
appearance of being 'old-timers.' Farther south is the 
South F'ureka mine, which is opened to a depth of "2700 
ft. on the incline. A geared hoist driven by two 400-hp. 
General Electric motors coupled to a rope pulley, 
which drives the pinion shaft, brings the 3%-ton skips 

matieally takes a cut of the whole stream in the laun- 
der once in five minutes. 

Oneida Mill 
A pleasant ten minutes walk brought me to the 
Oneida mine, which is being developed to 2200 ft. 
vertical depth. Flat ropes are used on the hoist, which 
raises the skips to a jaw-crusher. From this the ore is 
trammed a considerable distance to a hydraulic ele- 
vator, which lifts the cars about 30 ft. to the mill-bins. 
Pressure is obtained from a water-tank on a hill near- 
by, while the descent of the elevator forces the water 

vi?V - L^^^^i^aA m i—'^^i^^aaa^^i^a^M 

**-. j^t^ 




to a Knight jaw-crusher, the ore falling into a storage 
bin. From here it is trammed to the SO-stamp mill, 
built by Knight fi < . This plant is a credit to any 
mining company, and is certainly well maintained. 
The framing is of the 'A' type, and four 50-hp. Allis- 
Chalmers motors drive the plant in four units, there 
being one belt to each cam-shaft with live earns driven 
from the main drive-shafts. The stamps crush five 
tons per day through a 24-meah, brass, wire screen. 
They weigh 1060 lb., and drop 102 times through 6 1 - 
inches. Shoes last 13o and dies. 60 days. Amalgamation 
is along the usual lines. Three Frue vanners deal with 
the pulp from each battery, making 48 in all. They 
run at 200 strokes and the belt travel is 40 in. per 
minute. Eight tons of concentrate is collected per day. 
All mill floors are hosed to a collecting tank, and this 
material is re-treated. Before the tailing goes to the 
new settling pond, it is sampled by a pipe which auto- 

used to a reservoir for the mill supply. The mill has 
GO stamps, but only 20 of 1000 lb. each arc at work. 
They crush about 90 tons daily through a 24-ton eap- 
scre.-n. dropping 6 1 - in. 100 times per minute. Twelve 
4-ft. Frue vanners complete the treatment, after which 
the tailing is collected in a pond close to the mill. A 
100-hp. motor drives the whole plant. 

Kennedy Mill 

The Kennedy, about one mile from Jackson, is being 
actively worked to a depth of 3600 ft. vertical, and the 
vein has been followed to 3850 ft. I saw the stopes 
between 3300 and 3600 ft., getting an idea of the 
nature of the ore and country rock. The surface equip- 
ment includes nine return-flue oil-tired boilers, making 
steam for a first motion Allis-Chalmers hoist, which 
hauls 4-ton skips. As a large quantity of timber is 
used in the mine, there is a considerable quantity 

I'M I 

MIMM. II Mil K I'Kl » 

st.i.-ki.l <>n ill. ,n,i „ complete sawmill is in 

•i,.n Tin- skips dump the or,- upon 
ami ill.- largi r ; broken bj .1 jaw ernaher. All 

tin- ,.r.- drops ml,, a storage 1, 111. an, I 5 ton cars, drawn 

by mulea, take il to the mill-bina There an' Hhi 
itampe eruabing 13,000 to ma par month 

through 30-meah tereena The style of framing is the 
front knee, with the mam drive-ahafl level with the 
ihafta. Two 150-hp. motora aaoh drive a small 
riHiiiN-r siiai'i. iliis 111 turn driving the main shaft by 

are pla I al eaefa and of the plant. 

The eam-ahafta are driven bj belta from dutch pulleys. 
The stamps, in to a shaft, work in Pacific guides, ami 
drop Iihi times per minute through 6 inohea. Inside 
ami outaide amalgamation is the rule, tin. latter being 


mi long sluice plates. Forty Prue vannera, recovering 

al t ten tons of COneentrate daily, arc driven at 180 

str,,kes per minute, ami this product is reconcentrated 
<m two mure Prue machines, Below the mill is a large 
plant of sloping canvas tables in four units, each 

being divided into VI parts. The l' | is regulated to 

give waves of pulp on the canvas, and at regular in- 
tervals the Bow is shut off each, and the fine mineral 
sprayed, collected, and drained. The final tailing is 
run down -lacks, ,11 creek, but the new scheme of dis- 
posal bj f ■ 'levator wheels in series will soon he in 


Concent rate from the vanners and canvas plant is 

carted to a plant about a quarter of a mile away for 

local treatment. This is conducted in two oil -tired, hand- 
led, and rabbled, one-hearth furnaces, the tiring being 
intermittent. The roasted ore is raked into barrows. 
damped down, and shoveled into four wooden vats of 
10 tons capacity each. Chlorine gas is made in the 
usual manner by sulphuric acid, salt, and manganese 
dioxide. The gas 'flows' up through the charge, hav- 
ing about four hours contact, regular tests being made 
with ammonia at a vent to see if the gas is coming 
through. The charge then stands about 48 hours be- 
fore being washed. Gold is precipitated by ferrous sul- 
phate in wooden vats. This is made in the plant by 
treating iron with sulphuric acid. The precipitate is 
finally dried and melted at the mine and the bullion 

Argonaut Mill 

The Argonaut mill in opposite the Kenn&dj on a 
st.ep hillside, (in the incline the mam shaft is down 
linn ft it ii served bj an electric hoist .\ ]■_• hj 18. 
in. jaw crasher, of Enighl \ Co.'s make, breaks th 

this then drops into a bin high ab,,\c the mill 

ton ears, hand pushed, take th ■,■ t,, t|,e „,,|| |,i„ s , 

everj othercarload being weighed. The battery frame 

is "'' ,l "' '''""' l<i style. Challenge feeders supply 

forty 850-lb, stamps, dropping •','_■ in. 96 times per 

minute, the daily output being 200 tons. The B CI ning 

varies, but 16 mesh is mostly used, A grading test 
show s the following: 

Screen. Percent 

0n i0 1 

On CO ,, ; , ;T 

On SO ,,,;; 

On 100 9.33 

On ISO , 

On 200 5 84 

On 300 150 

Through 300 31 67 

This shows how extremely fine the slaty matter in 

the ore becomes red ',1 even when using so coarse a 

screen as lii mesh. 

The mill is driven by an 80-hp. General Electric 
motor. Amalgamation is mostly inside. 60ft of the 
total gold being caught there. The apron plate is 4 by 
5 ft., and the sluice plate 22 ft. long. There arc sixteen 
6-ft. Prue vanners. which save :;c, to ns of concentrate 
per day. Pulp from these machines Hows to a canvas 
huddle :10 ft. diameter, with 16 decks, divided into 
nine tables to a deck, each table being 4 by 5 ft. The 
speed of the machine is one revolution in f7 minutes. 

Its operation is similar to that of the , described, 

the fine concentrate being cleaned of barren material 
on a -fC.-t't. vanner. The huddle saves 14 tons per 
month. By concentration, 1.")% of the gold is recov- 
ered, so the Argonaut mill has a total extraction of 
85%. Further experimenting is to be done on the ore 
at an early date. 

Zeila Mill 

The Zeila mill is near Jackson, and is of an old style, 
and out of 40 stamps only 25 are working at present. 
Three and a half-ton ears drawn by a stubborn mule, 
transport the ore to (he mill-bins, after being crushed 
by jaw-crusher at the shaft. The ball cry frame is of 
front-knee construction. The crushing capacity of the 
800-lb. stamps varies from four to seven tons per day, 
as the ore consists of mixed upper and lower level 
material. Sixteen-mesh screens are used, and inside 
and outside amalgamation is the rule. Pulp flows to 
10 Prue vanners. 11 of which are working, and the con- 
centrate is shipped to smelters. The vanner tailing is 
sold on a royalty basis, and is treated by a 40-ft. re- 
volving canvas machine, making one revolution in 17 
minutes. It consists of four decks with thirty 4-ft. 
tables in a deck, which are sprayed as previously de- 
scribed. The mineral and fine ore caught is reconcen- 
trated on four vanners. 



.January :S. 1914 

Progress in Gold and Silver Ore Treatment in 1913 

By Alfred James 

The depression of the day has surely spread to 
progress in practice. One would this year have ser- 
iously contemplated the necessity of sending out a blank 
sheet, as an adequate summary of our progress, but for 
the brilliant work of Denny at Nipissing. Whether 
looking at crushing, classification, fine grinding, agita- 
tion, filtration, or precipitation and recovery, one is 
impressed by the idea that during the year we have had 
nothing new of note, indeed that in some respects 
practice has possibly become decadent, due perhaps to 
the remission of the efforts of men formerly interested 
in keeping up the level of practice at certain points. 
There have been but few new mills and even those have 
been on lines already familiar. The good work of the 
Consolidated Langlaagte, ;is shown by the extremely 
low cyanide costs (see official report, September 30, 
1913, cyaniding cost of 27e. per ton i is perhaps counter- 
balanced by the extreme caution which made the staff 
defer the adoption of filtration in place of decantation 
until their recent mill, the Van Ryn Deep, and even 
now in the new mill they are not yet prepared to in- 
stall the Nissen stamp, which proved itself so satis- 
factory at the City Deep. The Cam & .Muter and 
Shamva mills are not yet started. 

Generally, for the year it may lie taken that ex- 
ceptionally progress has been on chemical rather than 
on mechanical lines. In addition to the Denny aluminum 
preparatory process we have also the increasing use of 
so-called 'acid' solutions in eyanidation and the substi- 
tution, in at least one case, of aluminum-dust precipita- 
tion for zinc dust. 


Agitators widely heard of last year seem now to have 
disappeared. To my queries as to the position addressed 
to the leading exponents of advanced practice in 
Mexico and in South Africa, respectively. 1 have re- 
ceived strong endorsements of Jay A. Carpenter's 
statement in the Mining mul Scientific Press 1 "that 
no one of the many less costly types of agitators has as 
yet proved to the general satisfaction that under varied 
conditions it is the equal of the Pachuca for reliability 
and low operating costs;" and this opinion is con- 
firmed by the adoption of this agitator in every new 
African wet-crushing plant. 

A reference to the valuable table on compressing 
given in the Minimi and Scientific Press of October 
15, 1910, will show one reason for the advantage of a 
tall tank over a short tank. Assuming the quantity of 
air to vary as the diameter of the tank and the pressure 
as the height, then we may take it that the same 
quantity of air will agitate double the quantity of 
material, provided the latter is charged into a tank of 
double height. The pressure of the air. however, would 

iMay 3. 1913, p. 646. 

be doubled, but to compress 10 eu. ft. of free air per 
minute to 15-lb. takes 0.6 hp., to 30-lb. 1 hp., to 60-lb. 
1.6 hp., to 90-lb. 2 hp. It would thus appear that by 
using a tank sufficiently tall to require high pressure 
air it should be possible to agitate three times the 
quantity of material for twice the horse-power; but 
an even greater advantage of the tall tank is that the 
lessened number of cubic feet of air necessary for a 
given tonnage of pulp oxidizes or carbonates a less 
amount of cyanide. It was surprising to find that, 
whereas in Xew Zealand results showed a less con- 
sumption of cyanide by Brown agitator than by 
mechanical agitator, the saving being most marked in 
i he agitation of heavy material such as concentrate, in 
America at times heavy consumptions of cyanide have 
been reported as due to aeration action only. In every 
case of such consumptions which has come to my 
notice investigation has proved that the quantity of 
air used was out of all proportion to the New Zealand 
standard — and it must be remembered that in the lat- 
ter territory not only is slime and a mixture of crushed 
sand and slime agitated, but even coarse sand, tailintr. 
and concentrate. 

The Continuous Process 

As to whether the continuous agitation which has 
proved si. attractive in practice — at the East Rand 
tour nominal 100-ton agitators agitate 1700 tons of 
slime per diem with an extraction of 97% — should not 
be modified, particularly in the case of certain ores, by 
I lie interposition of desolutionizers so that the re- 
mainder of the series of agitators may be charged with 
fresh solution, is a matter engaging some little atten- 
tion. It may be well conceived that a Dorr thickener 
interposed between, say. every three agitators, may 
have a very useful effect in the treatment of some ores. 
but on the other hand engineers have been faced with 
just this problem since eyanidation came into being. It 
was a question as to how many transfers were desira- 
ble, and apparatus was invented for making transfer 
so cheaply that even treatment in four separate vats 
was economically possible; but in practice it did not 
prove desirable and the ultimate tendency has been to 
revert to single treatment in one vat only, and by 
means of the perfect sand feed now possible from the 
use of the Caldecott sand and table and cone or of 
mechanical classifiers, for instance as the Dorr and 
Ovoca. collection and treatment take place in the same 

A New Type 

A new agitator of the year is that described by 
Whitman Symmes in the Mining and Scientific Press 
of July 19. 1913. The agitator is an ingenious adapta- 
tion of the multi-air-lift principle to a flat bottomed 

January :l. 1914 

MINING AND >< || NIIIK |-|<l s> 


tank, and om looks forward i" reoeiving further u 

ronnli •>!' the results ohtaiiie.1 in pi ■in'luv, from lis |]M 

All of us have at timet used cones Mimy of ws have 

passed from ill'- dm of ies to classifiers such as the 

Dorr Perhaps DOI f us who have once used i-lassi 

tiiis of tins type have reverted ti nee, ami I therefore 

eonfeaa to aome little surprise at tin- geographical limi- 
tation of thi- us.- ..f theae elaaaiflers Is it that tem- 
peraments differ, tin- Mature of tin- work differs, or 
that it takes a long time ami tin- expenditure of con- 
siderable effort ami money to displace practice oner 
aettled ' For new mills operating under the Sunday 

Law in the Transvaal would have imagined that 

classitiiTs. which could In- stopped :it once and started 
up at ones, would he much more convenient than cones, 
which have to he cleared out ami re-started, and then 
there is the question of lahor and of work accomplished. 
It has been a common experience to go through a large 
mill and to find the Dorr, Esperanza, or Ovoca classi- 
fiers absolutely unattended ami with no laborer any- 
where near it. Experience with cones has been quite 
the reverse, and the producl of the latter impresses one 

as tabling a greater proportion of tine slime than 

that id' the former. A metallurgist of experience, who 
has evolved perhaps the most perfect cone of the day, 
writes as follows: "The cone, on the other hand, 
makes large capacity possible, on account of the length 
of the overflow rim. ami is not as sensitive to changes 
in the amount of feed. However. I think the best classi- 
fier, where it is important to save mill bead, would, or 
shoiilil. combine the advantages of each (classifier and 
cone) type, the design to embody (a) peripheral over- 
flow rim (b) mechanical removal of sand (c) more per- 
fect elimination of slime by .'in auxiliary rising current 
of clear water." and he suggests that (a) and (b) be 
accomplished by a screw conveyor attachment to the 
bottom of a conical classifier, which brings us to classi- 
fiers of the well known screw type of which one sees 
advertisements in the technical press. 


There is an increasing tendency to the publication of 
costs in the technical press. This makes detailed 
reference less necessary. During the year the Hollinger 
mill has undoubtedly impressed everyone as a clean 
equipment, cleanly run. with clean methods showing 
clean costs. Seldom has a property received a more bene- 
ficial advertisement than that which the methods of the 
HollinRer staff has secured for their operations. A 
reference to The Engineering £ Minimi Journal of Octo- 
ber 18, 1913, page 739, gives the costs in very great de- 
tail and also the proportion of labor and supplies com- 
prised in such costs. Thus we find stamping costs 18c. 
per ton; classification and tube-milling, 28c. ; thicken- 
ing, lc. ; agitation, 3c. : and filtration, 15c. Smelting 
and retorting (6c. 1 comes out to nearly as high a figure 
as the coarse crushing. Is it too much to expect that 
other concerns should give their costs as frankly as the 

1 1 • > 1 1 1 1 1 u- • ' r Sudi a course certainly er.-ulcs fldcUM 

ami Intereal it we amine an averagt si tor the 

cyaiiidiition of crushed pulp of is i..i 16c pat ton. it 
would be interesting to receive itatementa from the 

various parts of the world where these costs are being 

bettered, inch statements to I" ai mpanied by a note 

of the quantity ami nature of material treated, labor 
conditions ami rates of pay. ami Other items of interest. 

Tin- low oyaniding oosl of L8d (27c per ton at the 

Consolidated Langlaagte has alreadj I n referred to 

above. At the Qoldfleld Consolidated tin- cost may 

be taken at least at 62c, per ton. not including 2c. for 

assaying, 7c, for precipitation, and 5c. for refining, and 



l|;R^ > ";iy /> : Q 

BBmbS jBBbs Tf J^f^PjBl ■ *-"''iBBr**C 

^sCsr .' .. 3<SUsStsVS savinl 



omitting the water charge altogether. At the Hollinger 
apparently the cost is 30c. per ton. not including 7c. 
for classification and precipitation and lie. for smelting 
and retorting. At the Nevada Hills mill 3 tube-milling 
is given as 29c, and the system of interrupted agitation 
with decantation washing appears to amount to 85c, 
and even so filtration comes to 18c. and discharge to 
12c It would thus appear that the interrupted method 
of agitation referred to above may be considerably 
more expensive than the direct method, and the 
previous decantation treatments do not apparently 
avail to reduce the filtration costs below the high figure 
shown. The government report shows that the Indian 
mines are working at very low figures; for example, 

^Mining and Scientific Press, Dec. 28. 1912. 
*Eng. <£ Min. Jour., March 29, 1913, p. 646. 



January 3, 1914 

at Balaghat cyanidation comes to 15d. per ton treated, 
closely followed by the Mysore al 16 pence. 

Fine Grinding 

The success of the Hardinge ball mill for coarse 
grinding, as contrasted with the modified success of the 
al mill for fine grinding, has long since caused 
sp 'dilation as to whether short tube-mills would not be 
as superior to the Bardinge for coarse crushing as the 
lengthened mills have shown themselves to he for fine 

crushing. 4 Development has been pro ding along 

these lines, particularly in America, where a short tube- 
mill 7 ft. diameter by 10 ft. long is reported to be beat- 
ing a conical mill by approximately 60^5 i "while it 
considerably more power it gains more than twice 
the tonnage." In Africa the Albu-introduced shorter 
16 ft. 6 in. by 6 ft. tube-mill is now almost universally 
adopted in preference to the old standard 22 ft. by 
5 ft. 6 in. The report from Mexico as to the results ob- 
tained by boring holes in the diameter of the tube-mil] 
at various distances and taking samples from the 
effluent would lie more valuable if the sizing tests had 
been given in full and also had the relation been estab- 
lished between the product at the periphery of the tube- 
mill and that delivered at the centre. If it were as- 
sumed that a certain proportion of the particles of pulp 
— taking tube-mills changed below the axis — were lice 

to traverse unground from the intake to the exit of the 
tube-mill along its axis, then it would be admitted that 
a sample taken from the periphery did not represent 
the pulp at the axis or even pulp at varying distances 
from the axis toward the periphery. To that extent. 
therefore, the tests may not be reliable, but it is certain 
that in adopting as standard the old cement ration of 
4 of length to 1 of diameter, however correct this 
standard may have been for use in Western Australia 
where fine sliming to 200 mesh was employed, such 
ratio could scarcely be the most economical ratio for 
sucli coarse grinding as was formerly the practice in 
South Africa (60 mesh) or even the 90 mesh now pre- 
valent. The shortening of the tube-mill seems therefore 
a step in the right direction, as also the increase of the 
diameter to meet the increasing size of the particles 
fed, owing to the adoption of coarser mesh for the 
stamp screens. 

For some years past I have been endeavoring to have 
exhaustive tests made in South Africa as to the size of 
particle which should be the economical limit for tube- 
mills of the size there installed. So far back as 1905 
I was led to understand by Mr. Davidsen that 10 or 14 
mesh was this economical limit. If this were true — and 
Mr. Davidsen 's figures have proved remarkably 
accurate in practice — then it is obvious that the pro- 
portions for a tube-mill which should be suitable for 
taking a 20 or even 12-mesh product would not neces- 
sarily be economical for a 3-mesh product, much less 
the yo-in. clear aperture product recently tried at one 
of the latest mills on the Rand. The Rand benefits most 
freely by the adoption of methods introduced from the 

«See also Gates, Bull. Amer. Inst. Min. Eng., Nov., p. 2706. 

outside. The adoption of tube-mills was worked out in 
Australia, in _ New Zealand, and even in Korea, before 
they were introduced to the Rand, and all the informa- 
tion was freely available to the Rand, just as today, 
when the Ratbd is adopting Brown agitators and But- 
ters filters, it is adopting devices which have been 
worked out and proved elsewhere. At the time of the 
introduction of tube-mills to the Rand they were used 
mainly for the manufacture of cement and in gold min- 
ing for absolute tine sliming (minus 200 mesh). The 
results of the work of various observers were freely 
published 9 for the benefit of the Rand. Surely the 
Rand might have published in return the results of its 
investigations into the problems of coarseness of feed, 
dimensions, charge, and other matters more particularly 
referred to in this review for last year and in my re- 
marks to the Chemical Metallurgical & Mining Society 
of South Africa. It is for the benefit of the Rand that 
this information is required. But even in the matter 
of peripheral discharge, referred to in this review for 
1908, as having given to all tests a greatly superior re- 
sult to the ordinary discharge, the advantages or dis- 
advantages have not been publicly threshed out. and it 
has been left to this review to suggest the only possible 
disadvantage yet suggested, the question of con- 
sumption of power. Strange though it may seem a wet- 
crushing mill which discharges either at the periphery 
or through the trunnion by means of elevator vanes lift- 
ing the pulp from the periphery, similar to the Abbe 
or Schmitt feed — these elevator vanes were provided in 
many of the first tube mills sent to the Rand — takes 
more power than a mill discharging through the trun- 
nion in the normal fashion; and again, a mill with a 
discharge outlet considerably larger than the inlet takes 
more power, other conditions being equal, than a mill 
with a discharge only slightly larger than the inlet — 
owing doubtless to the greater proportion of pebbles 
rubbing idly, unlubricated by pulp. It is probable that 
there will yet be a development on the Rand in favor of 
peripheral discharge, but the increased results shown 
by the latter cannot be properly appreciated or dis- 
counted until one knows precisely the variation in 
pow.i- conditions required to produce these increased 

Power Consumption 

Apart, however, from the question of proportion of 
diameter to length, and even of variation in size and 
weight of pebbles for feeds of different coarseness, 
there is no doubt that the main question is that of 
power consumption which is now so heavy as to cause 
one a feeling of great uneasiness. It is true that in 
Australia and New Zealand, and in probably other dis- 
tricts where tube-mills were first introduced, mills are 
still operated for very low power, as a result of the 
adherence to the old standard number of revolutions 
and amount of pebble charge, but a consumption 
amounting to 1 hp. per ton of slimed product has to be 

"See Trans. Inst. Min. & Met, Vol. XIV. 

Jan.iMi-N 8, 1''I4 


Varioui linen nn.l roller bearii been put 

forward a. .1 solution ..t the problem, nt lead in pari, 
ami then •- evidence of remarkable savings arbing 
from the adoption •>( aueh i no devices, but 

ill.- publication of men .1 paper as thai of M <. P 

Sohnlein' <>n 'E lieal Pine Qrinding Pans' arouses 

a keen feeling on the subjt 

A Remarkable Grinding Pan 

At timet pan* eertainUj appear a t trac ti ve. Soma 
experimenter pnbliahea reanita which appear to be bet- 
ter than those obtained in precth r which do not 

stand critical investigation. Mr. Sohnlein 's paper is 
thought-compelling. 1 1 i-> 5-ft. pan, taking say i> hp. for 
only :(2 revolntiona per minute, gave only 2' L . tons per 
•Ji hours. Thia reaoll probably refleota more on the 
type of tli" initial experiment than on the actual 
oapacit) of the pan. When, however, the pans were 
made to handle 7 tons of sand in 24 honrs, he was ob- 
taining a t-i'snlt of course better than the initial result ; 
lint at 40 r. i>. in. tin- work of the pan did not compare 
with that obtained in Australian practice, where the 
normal speed is 56 r. p. m. I'm- coarse crushing and about 
Tin r.p.m. for One sliming. Mr. Sohnlein, however, by 
means of n most careful attention to detail ami the 
exercise of mi little ability to read the indications 
shown by bis various test; ami to devise improvements 

; rdingly, was apparently able to grind 30 tons to 

minus 200 mesh with his one pan for less than 7 hp. 
Thin is good work ami is taken as showing a result of 

over 4 ■"• 1 tens slimed per horse-power day. lien- Mi-. 
Sohnlem'fl practice differs from Australian practice, 
-which is againsl the breaking down of coarse sand ami 
tin- tine sliming of it in one operation, A 5-ft. Australian 
pan is assumed to grind 20 tons of eoarse sand (say 200 
holes to the square inch 1. but to fine slime to 200 mesh 
20 tons per day two pans would be installed in parallel 

for breaking sand with a further pan in sequence to 

tine slime the product of tile other two pans, or say 
•^1 hp. in all. 

When one comes, however, 1" look int.. lie- means by 
which .Mr. Sohnlein achieved such extremely satis- 
factory results, he is mot immediately from various 
quarters with a statement that all these methods have 

1 11 tried before. Tn Cornwall at the tin works the 

investigator is shown pans made in llelston with a 
c-ntral feed somewhat similar to that shown by Mr. 
Sobnlein. From Australia lie is met by the statement 
that the central feed was tried and discarded because 
the centrifugal motion was such that the feed was found 
to be sent from the centre between tin- shoes to the 
periphery anyhow, and therefore the central feed was 
unnecessary : and it was pointed out that special 
passages between the shoes and dies were a feature of 
Australian practice. Be this as it may, one is impressed 
by Mr. Sohnlein 's work, by his methods of achieving his 
results, and by the fact that possibly the methods em- 
ployed by him were discarded by previous operators 
because they were not tried in the same way. Any 

«Eng. <6 Min. Jour., Sept. 27, 1913. 

methods which will give four timet the pulp oruabed 

for the same I, nirelj di if the 

eloeeel attention of the Industry, and «.- shall be much 
disappointed if we do nol bear from Mr SShnlein and 

Of his pan 

A p.. int. however, which arises from perusal of his 
paper is that his discharged pulp, containing nearl) 
''"'■ " r i' 1 "- ,IMI product, is coarser than that met with 

in Australia, and that it may be that the Australian 

!"'•'"''' I sliming coarse producl in a separate 

pan ace Hints for the apparent ,-\ ( -,^ borBC power on 
sumption. It is difficult to realize how. if Mr. Sohnlein 

slimes onlj 3091 nf his material in one passage through 

his pan, he is to slime the other Tir ; ami at the same 
time break down the new coming from his mill 
Thus, if we assume a feed of 38 tons of sand from the 

Overetrom tables, and that h passage through only 

one-third of this is ground, th.-n we an- met with a 
return of two-thirds Of this to the Dorr classifier with 

■'' seipieiit reject of 25 tons, or i;:. tons in all t.. be 

led i" the pan. which is only capable of sliming 13 tons, 

so that th.-i-c is a isequenl return of a still greater 

amount 1.. the classifier until a position of equilibrium 
is established resulting in a lessened fine Bliming out- 
put per passage. The paper is silent mi ih,. question 
of these returns. It is precisely for this purpose that 
the extra pans are required in Western Australian 
practice. We hop,- Mr. Sohnlein will let us have a 
further paper, with results of monthly runs; either his 
daily feed to his one pan is 114 tons per diem instead 
of only 38. or he is figuring on one-third of 38 tons 
only slimed per diem with results more nearly approach- 
ing those of the Ivanhoe and other mines at Kalgoorlie. 


There must be some reason for the advertised 
adoption of the Oliver filter at so many mine po: . 
ing fixed submerged filters. It is not suggested that the 
Oliver filter is a thorough washer. It was stated in this 
review for 1909 that there was far too great a tendency 
to use tin- fixed submerged filter in such a way that tin- 
results obtained were merely identical with those to be 
obtained from settlement and decantation. One wel- 
comed Mr. Hamilton's statement as to his own particu- 
lar practice, but the remarks were made as a result of 
working conditions observed at various plants and it 
would really appear as though, in the absence of any 
particular incentive on the part of the advertisers of 
the fixed submerged filter to maintain or effect a high 
efficiency, users are discovering that for mere subsidence 
results the Oliver filter is simpler and, in spite of the 
results shown above at the Nevada Hills, probably 
cheaper. W. A. McLeod 7 shows how the discharge of 
nnfiltered (unwashed) pulp is prevented in Western 
Australia, and from Asia, from Rhodesia, and from 
Mexico good results — 6 tons per leaf per diem — are re- 
ported from submerged vacuum-filters of rapid transfer 
type. It is surely a decadent proposal that for thorough 
washing shall be substituted a mere variation of the 

'The Mining and Scientific Press, September 13, 1913. 



January 3, 1914 

decantation process so thoroughly tried out in South 
Africa and in Western Australia. Even if the attractive 
proposal, from time to time put forward in the technical 
press, of the continuous use of a number of Dorr 
thickeners and Pachuca tanks in series be considered, it 
is found that the number of washing transfers is so 
great as to make such a process appear unprofitable 
when contrasted with cheap effective filtration, anil cer- 
tainly the statement of the Nevada Hills costs pre- 
viously referred to does not help the decantation theory. 

As worked out for a South African project of 100 tuns 
of 21 dwt. material, it appeared that the loss of dis- 
solved metal in residues would lie 1 dwt. per ton and 
in solutions '- dwt.. or 2s. per ton; the difficulty in the 
case of solutions being aggravated by the impossibility 
of adding absolutely barren solution for the various 

The experiments at Pachuca of dissolving the metals 
in filter-presses have been as little successful as the 
similar experiments carried out many years ago hi 
Western Australia. It was then established that suc- 
cessful work depends on efficient solution of the valua- 
ble content of the ore prior to the introduction of the 
latter into filter-presses. Any additional extraction ob- 
tained by solution wash through the filter-press is re- 
garded as an acceptable contribution toward the cost 
of filter-pressing but not as a serious process for the 
total solution of the gold in an ore. 

Advocates of decantation are apt to forget the 
trouble and expense of handling huge quantities of 
material: a trouble plaintively brought to my notice 
from the El Oro district at the time the Hacienda 
San Francisco, Pachuca. introduced the simpler direct 
practice. Even with very expensive decantation plants 
worked on the huge Witwatersrand scale, my experi- 
ence has been that the amount of dissolved metal lost 
in the residue, even on very low-grade material, is 
greater than the extra cost of treating that same resi- 
due in Dehne filter-presses — the most expensive form 
of filtration at present commonly employed. 


Reference was made at the outset to .1. J. Denny's 
work at Xipissing in the desulphuriug of silver ores at 
Cobalt. To those of us who since the days of Molden- 
hauer have worked in various ways with aluminum in 
our solutions and have invariably discarded the use of 
this metal owing to the fouling of the solutions with 
the much too readily formed aluminum hydrate, the 
Statements coming over on this side and finally the 
description of Mr. Denny in the Mining and Scientific 
Pr»s» of September 27, 1913. caused some little incre- 
dulity: but incredulity or no incredulity, the fact re- 
mains that Mr. Denny's prodtss is giving effective 
results and that it has to be taken seriously. It is 
true that it is stated that Mr. Denny's treatment at 
Cobalt effects a saving of from one to four ounces of 
silver per ton. depending on the amount of refractory 
minerals present, at a cost of. say. 1 oz. of silver or 
actually 54c. per ton. or the cost of roasting ores at 

Kalgoorlie (see this review for 1906), and therefore 
as a mere substitute for roasting it may appear that 
there is but little to gain by the change ; but the more 
closely one investigates Mr. Denny's discovery the 
more one is* convinced of the advantages which may 
arise from its application under certain conditions. W. 
E. Simpson has told me the result of his immersion 
of some Australian telluride ore in Mr. Denny's solu- 
tion apparatus, and experiments carried out by me 
here have confirmed the importance of Mr. Denny's 
discovery. Metallurgists in difficulty are invited to 
experiment with this new contribution to our knowl- 
edge, or. better still, to communicate with Mr. Denny 
at Xipissing. 

With regard, however, to the use of this method 
in practice, as also to the use of aluminum dust in 
place of zinc for precipitation, we have not yet suffi- 
cient information to enable us to determine the effect 
in practice of the accumulation of aluminum in the 
works solutions. We were fortunate in the early days 
of cyanide in the aid of natural reactions which pre- 
vented the zinc from accumulating in solution. Un- 
less we have some similar reaction in the case of alu- 
minum, the difficulties arising from its use may be 
greater than the benefits. Mr. Denny is silent in his 
paper, but doubtless will give us the benefit of his ex- 
periences at an early date. 

Another improvement of the year is the use of so- 
called 'acid' solutions in the treatment of ores which 
are round to foul anil decompose the ordinary alkaline 
solutions, (i. Gitsham's process has been described in 
Cyanide Practice in 1910-1913,' pp. 102-104, and ref- 
erence to it will also be found in the Journal of the 
Chemical, Metallurgical & Mining Society of South 
Africa. At one of the great gold mines in Asia, where 
acid solutions have been employed, a lessening of eya- 

niil nsumption is reported for the same recovery 

as heretofore. Sulman and Pieard point out that hy- 
drocyanic acid is commercially impracticable as a solv- 
ent for gold, but the addition to the hydrocyanic solu- 
tions of a small quantity of ferrous or ferric sulphate, 
or of copper sulphate, in presence of air. renders hydro- 
cyanic' acid an effective solvent, and this is probably 
the explanation for the use of these 'acid' solutions 
on ores otherwise untreatable in view of the cyanide 
consumption when alkaline solutions are employed. 

At Pachuca, tailing formerly treated by cyanide is 
now being leached for a long time with hyposulphite 
solution containing copper. There is an extraction of 
50% of the gold, a much better extraction of the silver 
than formerly obtained, and in addition practically a 
total extraction of the mercury. Solutions are precip- 
itated by copper pellets instead of by zinc, and the 
sludge is distilled. The cost is less than the cyanide 
treatment and the mercury is saved in addition. The 
volatilization process of gold recovery at the Gwalia 
Consolidated has been closed down. This news was 
not unexpected. It was recognized that Ben Howe had 
to deal with very serious difficulties in the recovery 
of volatilized gold. 

Januan 3, I'M I 


Progress in the Application of Compressed Air 

Hv Hunt in Pan i 

\.. markc«l iaipruvemcnts or radical departure! to 
practice are to be noted for the paal year, in the pro 
duetion, transmission, and uee, of eompreaaed air for 
mming serviae. Tin- field of appHcatiou of eompreaaed 
air power tranamiaaion, however, is continually widen- 
ing ii nneetion with the arte and manufactures, aa 

well aa in mining. In foundry work, pneumatic ham- 
men have become indispensable for compacting large 
mollis. This practice, which began about 1908, is now 
iMininoii in all foundries of any importance, and many 
different types of hammer are in use The applica- 
tions of eompreaaed air have alao extended in other 
directions, for foundries and machine-shops, as ad- 
juncts to the main power-plant. 

Progress in the use of electric drives for air-com- 
pressors has continued. It is unquestionable that, 
whenever electric current is obtainable at low rates, 
as from a central power-plant, both first cost and 
operating coal arc reduced, as compared with steam- 
driven compressor plants. The installation of such 
plants for compressed-air hoisting engines, which be- 
gan at the mines of the Miami ami Ana ula compa- 
nies in 1911, lias given satisfactory results. Seven of 
the main Anaconda steam hoists were changed to com- 
preased-air drive in 1!)11 and 1912, namely, at the 
Mountain View, IIil'Ii Ore, Diamond, Leonard, Wesl 

Gray Rock. Tramway, and Pennsylvania shafts. Dur- 
ing the past year the work of remodeling on the same 

lines the plants of all the remaining Anaconda shafts 

has been in progress. Ultimately, at this mine, there 

will be 9 main and 12 auxiliary hoists operated by 
compressed air.' Tests on the Mountain View hoist 
i the first to be run on the new system) showed a 
total mechanical efficiency, without reheating, of 
36.37$ ; with reheating, something over 50%. This 
practice is likely to be followed at other properties 
where a number of hoists can be run from central 
electric and compressor plants. At the Copper Queen 
mine, five direct-acting main hoists, and two seared 
hoists have recently been converted to the use of com- 
pressed air. the old boiler plants being utilized as re- 
ceivers. The air is reheated to 275° Fahrenheit. - 

The increase in the use of hammer-drills has been 
general in this country for st oping and raising and 
sometimes shaft-sinking. In South Africa, also, where 
their introduction was at first slow, recent reports 
show that they are growing in favor. A number of 
new designs, and modifications of the older patterns, 
have lately been put on the market. 

In connection with a new method for putting down 
large diameter drive pipes for foundation work, by 
means of the Goubert pile-driver, compressed air is 

iBuZI. No. 81, Amer. Inst. Mtn. Eng., and Mining and Scien- 
tific Press. Nov. 2, 1912. 

-Mining and Scientific Press, March 15. 1913. 

used for cleaning out the pipe, As the pipes are to 

be tilled with rets, the material within them unai 

be completely removed, For this purpose, at interval* 
of every two or three feet, the driving is stopped, a 
small air-pipe is forced down inside aa r H r aa it will 

gO, the ice, n,r pressure run up. mid 1 1 mprcssed 

air turned on. This quickly empties the pipe. .in. I 

driving is resumed. <>n the Trana-Cancaaian railways 

compressed air. instead of steam, is qoa used for atom 

using fuel oil. It avoids the formation ..I' explosive 

"..ises iii the furnace ami ec mizea fuel consumption, 

A new high-vacuum air-pump has been invented bj 
W. (lacde. It is of the multiple rotary type, working 

up to about si mil r.p.m.. at which speed a nearly com 
plete vacuum is produced. 4 

The granulation of slag by compressed air is super 
scding the older method by water, and is the subject 
of a paper recently read by (;. .luntzcn before the Ger 
man Metallurgical Association. 

The Inspiration Consolidated Copper Co.. of Arizona 
has ordered six 10-ton, compound, compressed-air loci, 
motives, together with a charging compressor of capa- 
city sufficient for 14 locomotives, which, it is expected 
will eventually be installed. The pipe-line pressure 
is 1000 lb.; main tank pressure, 800 lb.: initial pics 
sure for the high-pressure cylinder. 250 lb., from which 
it is expanded to 50 lb. Before entering tin- low- 
pressure cylinder, the air is re-heated. It is stated 

that tests show that this mode of using the air gives 
a large increase of efficiency over the single-expansion 
type of locomotive. A series of tests recently mail 
in Germany on compound compressed-air locomotives 
gave the following results: air preheated for both cyl- 
inders to 180 C C.; lensfth of run. from 0.02 to 1.16 miles: 
gross loads. 70 to llili tons: air consumption per ton- 
mile. 26.3 to 32 cu. ft. for adverse grades of 0.13%. 
Aside from the question of relative economy of elec- 
tric and compressed-air underground haulage, the lat- 
ter has a distinct advantage for mines working ore 
bodies of large lateral extent in which there are main 
secondary gangways and but few long continuous 

A Drill Tester 

A few years ago the practice was begun of making 
efficiency tests on compressed-air rock-drill plants of 
large mines. The reasonableness and practical value 
of such tests have appealed more and more to pro- 
gressive mine managers, and during 1913 series of 
tests have been made at several mines; for example, the 
North Star mine'' in California, and the Ojihway mine" 

'Tram. Amer. Soc. Mecn. Eng. 
tCompressed Air Magazine, Jan. 1913. 
^Mining and Scientific Press, Aug. 2, 1913. 
«Eng. <f Min. Jour., June 14, 1913. 


January 3, 1914 

in Michigan. Similar work, previously inaugurated, 
teen continued at the Franklin zinc mine, also at 
the mines of the Copper Range Consolidated Co., and 
other properties of the Michigan copper district. A 
drill-testing machine lias lately lieen patented by W. 
|i. Paynter, of Grass Valley, California, for making 
simp tests. Indicator cards are taken, air consump- 
tion re -ded, and the strength of blow measured for 

different air pressures. Defective drills are thus read- 
ily detected and held for repairs, instead of being 
sent underground and causing loss of time. The effects 
of changes of air pressure and lubricants can be con- 
veniently investigated. The apparatus is also useful 
for testing new equipment or for comparing the effi- 
ciencies of drills of different makes. It is adapted to 
both piston and hammer drills. 7 

A novel use of compressed air, for quarrying gran- 
ite at Mount Airy. North Carolina, is described in 
Mines ■in:/ Quarry, July-August, 1913. The granite lies 

in nearly horizontal si ts, forming a low hill. A 

hole three or four inches in diameter by five to eight 
iv,t deep is drilled near the centre of the area to be 
removed. The bottom of the hole is chambered ou1 by 
half a stick of dynamite, tn the cavity thus formed. 

a small charge of powder is exploded, which starts a 
horizontal cleavage. This is followed by a succession 
of charges of increasing size, the hole being pin 
each time to confine the gases, until Khe cleavage 
reaches an area of say To to 100 ft. radius. Finally, 
a pipe is cemented in the original hole by melted sul- 
phur, and ini'Ctcd to the compressed-air line. Air 

at 70 or SO lb. is admitted, extending the cleavage over 
an area of several acres, thus affording a parting to 
which the epiarrymen work in cutting the stone into 

Portable Compressors 

There lias been a notable increase in the use of 
small, portable, independent air-compressors, driven by 
an electric motor or gasoline engine. In either case, 
the entire apparatus, including an air receiver, is 
mounted on a low truck. An electrically-driven com- 
pressor of this type, built by the Sullivan Machinery 
Co., has a 10 by 10-in. cylinder, and, at 20 r.p.m., com- 
presses 181 en. ft. of free air to 80 lb. gauge. A cir- 
culating pump is provided for cooling the air cylinder. 
The over-all dimensions, including truck, are about 8 
ft. long by •"> ft. wide; total weight. 7200 lb. s The 
compressor may he driven either by chain or gearing. 
rinse little plants are useful for a variety of under- 
ground service, where power is required temporarily 
at a distance from the main mine plant; for example. 
to operate one or two rock-drills, or a small pump, or 
lal pick machine. Other designs of portable com- 
pressors are made by the Ingersoll-Rand Co. and the 
Clayton Works of the International Steam Pump Co. 
The Ingersoll-Rand Co. also supplies a number of dif- 

-Mining and Scientific Press, Aug. 2, 1913, and Eng. <f Min. 
Jour., Nov. 1. 1913. 

*Coll. Eng., Nov. 1913, p. 260. 

ferent sizes of small, semi-portable, belt-driven vertical 

Among the new gasoline-driven portable compressors 
are those of the Ingersoll-Rand Co., National Brake 
& Electric cb., and the Sullivan Machinery Co. One 
type, built by the last mentioned concern, is mounted 
on a heavy wagon truck for surface work, such as the 
operation of rock drills and contractor's machinery. 
Its rated capacity is 9o eu. ft. of free air per minute 
to 00 lb. at 165 r.p.m.; or 112 eu. ft. to 100 lb. at 193 
revolutions. The gasoline engine is horizontal, and of 
15 to 20 horse-power. 

New York Law 

The New York state law governing the conditions 
under which labor may be employed in an atmosphere 

of c pressed air, has recently been radically amended 

by the Legislature. It is printed in the Compressed Air 
Magazinr. October 1913. page 6998. A well known au- 
thority on compressed air engineering has called at- 
tention to two oversights in the amended law, in that 
it takes no account of the temperature nor of the 
breathable conditions of the air as determined chiefly 
by the volume furnished. 

New designs of multiple-port, light disk air-valves 
are features of some recent compressors. They have 
a large port area and small lift. Among them may 
be mentioned those of Boby & Co., Ltd., Lincoln, and 
Walker Bros, of Wigan, England, the Iversen 'Auto- 
matic Plate' valve, made by the Mesta 'Machine Co., 
and the Rogler-Hoerbiger valve used in the Relliss and 
Morcom compressors, of England. All of these are 
spring driven, almost noiseless, and capable of work- 
ing at high speed. 

In 1908 the Rand Mines. Ltd., and Eckstein & Co., 
controlling large groups of the Witwatersrand gold 
mines, determined to adopt electric drive whenever 
applicable and to centralize their compressed-air plant. 
This led to the incorporation of the Rand Mines Power 
Co., the capital for which was furnished by the Vic- 
toria Falls & Transvaal Power Co., Ltd. The latter 
Company had been previously formed to supply power 
to the Transvaal mines, having in view the possible 
installation of a hydro-electric plant at Victoria Falls, 
on the Zambesi river, about 700 miles north of Johan- 
nesburg. This plant is still in abeyance and both com- 
panies, operating as a single engineering undertaking, 
are supplying power from steam turbine electric gen- 
erating sets. The following is abstracted from the 
Proceedings of the Institute of Electrical Engineers, 
London. March 13. 1913: 

The aggregate power of the plants thus far installed, 
or under construction, is about 180,000 kw. (241.280 
lip i. while the total power now being used by the 
mines on the Rand is estimated at 400.000 hp. During 
the past year, an additional plant has been under con- 
struction and the main transmission lines extend near- 
ly throughout the whole fifty odd miles of actively 
worked reef. There are four principal power-stations 
and two distributing stations. At two of these points, 

.luiiiinry .!. L914 


m\ miles :i|>iiri RoaherviMe near Qormiston) and 
Robinson Central Deep (east of Johannesburg are 
installed eompraaaing plants supplying »ir to ■ it 
mile main pipe system, Then ara now in operation 
1'J rotary aampreaaora of 3500 kw. each, and throe nam 
units oi 7ihh) k«. eaeb an now tinder eonatruotion ; 
total, 63,000 kw., which is equivalent t" 84,460 hone- 

.\^ a baaia for determining a fair rata per unit to 
be charged to the oonanmera, a number of the Beparate 
mini' eompreaaon wen teoted. The average over-all 
efflcienoy of si\ of these sample eompreaaon was 64.19 
and ,i eommereia] unit was fixed upon equivalent to 
0.641 of tin' quantity of air which would be compressed 
isothermally by the expenditure of one kilowatt-hour 
of electrie energy. The measurement of the compressed 
air was an important and difficult problem. A dis- 
placement meter of large size was designed, which 

gave sufficiently i urate resulta for ■ Bow of air 

through an orifl if 0J in. diameter, With this mas- 
ter unit as a standard, ■ series of orifices were cali- 
brated for testing the sample mine eompreaaon I « 
measuring the air used b) the individual consumers, 
a meter working on the principle of the Ventnri tube 
was adopted. The ooeffioienl for the tuba was fixed 
i>> a long series of teats, and measurements aw now 
being made with eztre ly small limits of error. Of 

the air units supplied, !l.V , are recorded OS ll i- 

slilliers' meters, '.V, lost ill t I'll llslll issioll, alld L" , IIII 

accounted for. The deliver) pressure is 100 Lb., the 
average pressure drop from the generating plant to 
the consumer being not over 6 ll>. The observed de- 
Livery pressure is found to vary not more than 2% 
from the calculated pressure. This remarkable instal- 
lation of centra] and distributing plant is likely to be 
still further extended. 

The Irving Leaching Process 

By L. S. Austin 

Joseph Irvine;, of Salt Lake City, has patented a 
process* for the leaching of oxidized and sulphide 
ores of copper containing gold and silver. Essentially 
it consists in crushing mixed carbonates, oxidized, or 
sulphide ores of copper to 12 or finer mesh. The 
crushed ore is subjected in leaching vats to the action 
of the mother liquor containing ferric sulphate from a 
prior leaching, to which has been added some sulphuric 
acid ami common salt. The ore and solution together 
is mechanically agitated and heated by injecting steam. 
Upon conclusion of the agitation the mixture is allowed 
to settle. It is then drained and washed, yielding a 
copper-bearing solution, which is passed through a 
filter consisting of sand and fresh iron pyrite, and 
then through the precipitation vats. Recovery of the 
metals may be accomplished by electrolysis and by 
passing solution over scrap iron. The remaining solu- 
tion can be regenerated for further use ; it is oxidized 
by a steam jet which agitates it violently, bringing it 
in contact with air. The solution is then reinforced 
with sulphuric acid and salt, and is ready to be again 
used for a fresh charge. 

It would appear that the free sulphuric acid reacting 
on copper carbonate would give cuprous sulphate which 
would decompose the salt as follows : 

(1) CuS0 4 + 2NaCl = Na,SO, + CuCl 2 

and the copper chloride, acting upon silver sulphide, 
would decompose it : 

(2) Ag 2 S -f CuCl, = CuS + 2AgCl 

In presence of salt in the solution the silver chloride 
dissolves. Gold would be acted on in the same way. 

*U. S. patent 1048541, December 31, 1912, Salt Lake Mining 
Review, XV. 17; Met. .t- Chem. Eng., XI, 160. 

Ferric sulphate, acting on chalcocitc. changes it to 
copper sulphate thus : 

(3) Fe 2 (SO < ) 3 + Cu 2 S = CuSO, + 2FeSO, + CuS 

and the resultant CuS, as well as that in the sam< n- 

dition in the ore, would be changed as follows : 

(4) Fe 2 (S0 4 ), + CuS + 30 -f- H.,0 = CuS0 4 + 

2FeS0 4 + H 2 S0 4 

When the ore has been leached, the resultant solu- 
tion, before going to the scrap-iron boxes for precipi- 
tation, must have the ferric sulphate changed to ferrous 
form, otherwise the consumption of scrap iron will be 
largely miscarried. This is done, as already specified, 
by running the solution through a filter containing 
fresh pyrite. 

(5) 7Fe 2 (S0 4 ) a + FeS 2 + 8H 2 = 15FeS0 4 +8H 2 S0 4 

This ferric is changed to ferrous sulphate and sul- 
phuric acid is regenerated. 

After the copper, gold, and silver have been pre- 
cipitated the barren liquor, being agitated by a steam 
jet, its contained ferrous sulphate is changed to ferric 

Fig. 1 is a plan of a 50-ton mill, designed for the 
effective carrying out of the process along lines sug- 
gested by the long experience of the inventor in the 
hydrometallurgy of copper. 

The ore, after coarse crushing, goes to the 100-ton 
storage bin B. whence it is fed regularly to a Hardinge 
mill, being crushed in the iron sulphate solution flow- 
ing from the iron sulphate storage tank. The leaching 
vats E, E' are alternately filled with the pulp, being 
at the same time agitated by a four-arm stirrer. 
When two-thirds full the proper quantity of sulphuric 



.January 3, 1914 

acid is run in from the acid storage tank or acid-bear- 
ing liquor from the dilute copper sulphate storage tank 
I). When a vat has been tilled with pulp, the stirrer 
is stopped and the contents allowed to settle. The 
supernatant liquor is now decanted, going to the 
strong liquor storage tank ,/. The pulp left in the 
leaching vat is drawn off to the cone-classifiers F and 
<l. In these classification is effected by aid of a rising 
current of wash-water, while the underflow from both 
cones goes to the concentrating tables in case it con- 
tains heavy sand of value, otherwise it is wasted. 
KYom the concentrating tables the tailing, if worth 
while, can be pumped back to the Hardinge mill for 
further treatment. The overflow from the second 

cone G goes to the pulp storage tank //. From this, 
as much of the clear liquor as possible is deeanted 
before the remaining slime is withdrawn at the bottom 
to one or other of the filter-tanks / and /'. The filter- 
tanks have false bottoms of porous tiles which will be 
unaffected by the acid liquid. The filtrate from either 
tank is withdrawn to either of the liquor storage tanks. 
One of the tanks is for the stronger, the other is for 
the weaker solution. From these the solution is de- 
livered in regulated flow to the electrolytic-deposition 
boxes A'. A'. A'. A", where most of the copper is pre- 
cipitated electrolytdeally. The partly impoverished 
liquor then goes to a sump-tank L and to the iron pre- 
cipitation tanks M, M'. where the remaining copper 
is recovered by scrap iron : or the solution at 
L containing a little copper, may be sent back 
by a centrifugal pump to the copper sulphate 
storage tank D to be again used. The barren 
solution in the second sump tank N is also 
sent back by a centrifugal pump to the high 
1, level iron sulphate tank C and is there agi- 
tated by blowing in steam, whereby the fer- 
rous sulphate is changed into ferric sulphate, 
and is then ready for use on a fresh charge. 
The cycle of operations for crushing, filling 
tank, leaching, and washing contents, and 
finally emptying tank, will average 48 hours. 
A number of laboratory tests in 1 to 5-lb. 
lots have shown an extraction of copper vary- 
ing from 77 to 99% and with an average of 
91.4% ; while several ores which had appre- 
ciable amounts of gold and silver with the 
copper were also found amenable ; for ex- 
ample : 

Gold. Silver. Copper. 

Utah ore: Original 0.06 0.56 1.60 

Tailing 0.01 0.09 0.13 

This amounts to an extraction of 75% of the 
gold. 83f of the si ver, and 92% of the 

On a larger scale, using 700 lb. of copper 
me containing 1.32%, an extraction of 79% 
was made ; on another lot of 1500 lb. contain- 
ing 1% copper there was a recovery of 74%. 
In precipitating the copper there was con- 
sumed 1.28 lb. iron per pound of copper re- 

On these 50-lb. lots, some Utah copper ore, 
containing Cu 0.81%, together with 0.145 oz. 
An, and 5.06 oz. Ag per ton, gave, as the re- 
sult of three tests, an average extraction of 
56% of the copper, 41% of the gold, and 60% 
of the silver with a copper precipitate con- 
taining 68.52% copper with 1 oz. of gold and 
189 oz. of silver per ton. 

On an operating scale, March 1913, on some 
Nevada ore a charge of 23.19 tons, contain- 
ing 4.65% copper, gave the following results 
using decantation and leaching, the ore hav- 

L ~Q> 

4m*r? ot/mp 

Jaaoaq t, l'H 



tag bcrn eruahed fan the returned banco toloUon; 
there *»« actually extracted by the solutioi 
the copper. Precipitation was slow beoauae all the 
iron wiui ii. h There ».>> used 1608 n> of aoid; the 

nulling time waa ',''_• hours. 

Ob another eh i r\ weight, March 1913, 

the ore contained ■_' .*••>' ', copper. The ore was oruahed 
in the barren solution, ami after settling 12 houra the 
■upernatant aolntion was decanted. Acid waa then 
added and the whole mass waa itirred and allowed to 
settle. The decanted aolntion contained 1.57', copper. 
The total copper diaaolved waa 1610.66 lb., equal to a 
14 extraction and 8200 lb. of acid waa oaed. This 
charge contained a very large portion of copper glance 
(ohaloooite). It is interesting to note that orea con- 
taining copper glance leaeh slowly. 

Ob «ipper carbonatea and oxides, and with acid 
quoted at an average price of (25 per ton, the acid 
consumption would be 2c. and average treatment costs 
4 to "><•. per pound of copper. On heavy sulphide ores 
acid consumption would be 3c. and average treatment 
COata 5 to tie. per pound of copper. It is estimated that 
a crushing and leaching plant to treat 100 tons per 
day would cost $:?5.000. This includes building and 
equipment complete. Scrap iron delivered would cost 
$15 per ton. The consumption of iron is placed at not 
to exceed 1.5 lh. per pound of copper recovered and 
of acid not to exceed 2 lh. per pound of copper, and 
it mav he considerably less than that. 

Gold-Dredging in Burma 

Oold-dredging in the Irrawaddy river has been act- 
ively carried on for the past eight years by the Burma 
Gold Dredging Co., according to an article in the 
Rangoon Times recently quoted by the For Eastern Re- 
view. Starting with one small dredge, the Company 
has increased the magnitude of its operations until 
it now has five boats on the river. The dredging is 
entirtly confine* to the bed >f the Irraw ttVy river. 
for tiiei > ai>pea.' to be no Leash-gravel »»i benches 
containing gold. The banks of the river are high and 
consist of solid rock. Dredging on the river is both 
difficult and hazardous, although the gravel, where 
accessible to the dredges, is said to be easy to dig 
and tree from large boulders. The gold occurs in 
an extremely finely divided condition. It is stated 
that about 50 miles of the inner bed contains gravel 
which is profitable and suitable for dredging. The 
gold content is low. but the average per cubic yard 
is not stated. During the eight years of operation. 
the Burma company has made a total recovery of 
gold valued at about tloO.OOO, but the earnings have 
been insufficient to permit of the payment of divid- 
ends. It is stated that the cost of operating is ap- 
proximately 4c. per cubic yard. The management has 
found that the native laborers are quite competent 
to handle the dredges after they have been trained 
by white dredgemen, with the result, that the expert 
white labor has been found unnecessary. 

Flotation Processes During 1913 

By Bdwabd W m kkb 

In reviewing the progreaa of Dotation pr vs.- h of 

concentration during the past year, the tubjool natur 
ellj dividea itself into iwo parts dealing with law 

suits ami technology, res| lively, Never waa any 

branch of metallurgy Fraught with so many disputes. 
both legal and personal, and to an independent jour 

ualist it is no congenial task to have to write on the 

subject at all. Even now the last of my article 
appearing in your pages in January last have not died 

away. I shall begin by recording the legal history of 
the year. 

The appeal of the Klmores against the New South 
Wales judgment was heard in October before the 
.Judicial Committee of the Privy Council, and after 
tie- arguments were completed the litigants were noti- 
fied that the ease was to be reheard in January. The 
reason for this step was not given, and all sorts of 
wild guesses have been made on the subject. The less 
said by me on this occasion the better. The other liti- 
gation was in the .Montana court where Minerals Sep- 
aration sued James M. Hyde for infringement in con- 
nection with the plant at the Butte & Superior. The 
judgment was against Mr. Hyde, but it did not involve 
the Butte & Superior company, and so did not further 
the collection of royalties on the ore treated. A sep- 
arate action was commenced in October with the latter 
object in view and was decided in November. The 
Butte & Superior entered a different defense from 
Mr. Hyde, and pleaded that it used more than 1% 
of oil. claiming thus a distinction from the Snlman- 
Picard-Ballot process, which refers to comparatively 
minute quantities of oil. Tt was held that there were 
no new issues involved in the case, and while a pre- 
liminary injunction was refused by the Court because 
of the industrial disturbance that would have resulted, 
thl Butte <S Superior was put under bond pending de- 
cision of th,- appeal of the original case. A year ago 
I mentioned that J. I). Wolf was intending to bring 
suit for infringement of his rapid-agitation method as 
applied to llotalion. Nothing further has been heard 
of this, and the inventor is apparently waiting for 
the result of the Elmorc-Minerals Separation Niiit. 

As regards the technology of the subject, the Min- 
erals Separation process continues to prove its effect- 
iveness and cheapness, and its use is extending widely. 
It is not necessary to give details of the many plants 
erected or in course of erection, but it is opportune 
to say that the first part of the plant at the Inspira- 
tion copper mine in Arizona was ready for operation 
December 1, though actual commencement of operations 
has been delayed owing to failure of power. "Work 
will doubtless begin in January with a capacity of 
600 tons per day. Much has been heard recently of 
three processes developed at Broken Hill that may be 
described not unjustly as modifications of the Minerals 
Separation process adapted for special purposes; that 



January 3. 1914 

is to s;i.\. they are intended for selectively separating 
the galena and blende in the slime. Dyster's process 
in use at the Zinc Corporation plant and owned by Min- 
imis Separation consists of floating the galena and leav- 
iiiL' the blende to sink. This is effected without acid 
and with a small amount of eucalyptus oil, in water 
at the ordinary temperature and charged with salts 
such as the sulphates of lime and iron. The Owen and 
Bradford processes aim at floating the blende, using 
very high temperatures, and more acid and oil. The 
Owen process is being installed in the Sulphide Cor- 
poration; Broken Hill South, and De Bavay's plants. 
The Bradford process is being worked at the Propri- 
etary and is a modification of the Potter-Delprat proc- 
ess, introducing oleic acid. The variations between 
these three processes are, of course, largely caused by 
the different constitutions of the ores to be treated. The 
Horwood process, involving a part roast to sulphatize 
the galena, is in use at the Zinc Corporation mill, and 
its value as compared with the Owen and Bradford 
has yet to lie tested. The Elmore vacuum process is 
not being used to any great extent nowadays. 

The other process that has potentialities is the Mu- 
res, and probably its future will be in the treatment of 
carbonate copper ores. At the Whim Well, in West- 
ern Australia, excellent results are obtained, though 
a hitch has temporarily intervened requiring the sub- 
stitution of dry crushing and dry screening instead 
of the wet-crushing plant. The cause of this trouble 
was the kaolin in the ore making a mud that would 
not pass the screens. The process is at work at Ma- 
lines, in France, on a zinc-lead ore. and at the Grund 
mine, in the Harz mountains. Germany. The most 
recent plant built is one shipped to the Kahn copper 
mine in German Southwest -Africa. It has a capacity 
of 200 tons per day and is to treat a mixed carbonate 
and sulphide copper ore. The plant at the Cordoba 
copper mine, in the south of Spain, is not giving sat- 
isfaction, and the directors are threatening to suspend 
its operation. This plant does not treat the whole out- 
put, but only the re-crushed jig-middling. The process 
was adopted on account of the large amount of eal- 
cite. which consumed the acid used by other processes. 
That was several years ago. and probably some modern 
modification of the Minerals Separation would be ap- 
plicable. No doubt also some of the modern concen- 
tration tables would be of service. The dissatisfaction 
;it Cordoba is, however, not associated entirely with 
the process itself: it is largely caused by the poor 
quality of the plant. 

Mining Litigation — Review and 

Application of flotation methods to treatment of cop- 
per ores made great strides in America in 1913. It is 
now being used from British Columbia to Chile and its 
applicability to Alaskan ores has been shown by test. 
Its importance in this connection is due to the fact 
that the copper ores are the ones that are now being 
worked upon large scale and at the same time the ones 
where wet-concentration is especially imperfect. 

By RouEitT M. Seabls 

The year which is just passed has not been note- 
worthy for any number of important decisions in min- 
ing cases. Perhaps the overruling of the Yard decision 
by the new First Assistant Secretary of the Interior in 
the case of J. P. Nichols and Cy Smith before the Land 
Department, is entitled to the most important con- 
sideration. Although the effect of the Yard decision. 
as a precedent for the general interference of the Land 
Department in the matter of oil placer locations was 
largely nullified by the Act of Congress of August 24, 
1912. it has remained for the present administration in 
the Interior Department to clear the horizon generally 
by flatly overruling this decision. If government lands 
have been illegally located or are being illegally held 
under the mining laws, the proper forum for determina- 
tion of this fact is now admitted to be in the courts, not 
before the Land Department. 

Only two eases of any importance involving extrala- 
teral questions reached the Appellate Courts, the Round 
Mountain case in Nevada and the Stewart-Ontario case 
in Idaho. In the first ease, although the orebodies in 
dispute were in the extralateral segment of the vein, the 
case hinged on the right of the plaintiff to swing its 
location lines under an ambiguity in its patent so as 
to include a segment of defendant's extralateral sweep. 
The court permitted the defendant to go back of the 
patent and show from the record the relative rights as 
established by location priorities. The case is still 
pending on a re-hearing. The Stewart-Ontario case in- 
volved an attempt to claim an apex on the faulted edge 
of a vein, the court holding that no extralateral right 
could In- predicated on such a showing as it would in- 
volve taking the right on the strike instead of on the 
dip of the vein. The decision also reaffirmed the rule 
that the end lines of the discovery vein are the end 
lines for all secondary veins having their apices with- 
in the claim. This case has been taken to the United 
States Supreme Court and is still pending. 

Two interesting decisions by the Federal Courts in 
Wyoming and Idaho in the Duffield-Chemical Co. cases 
have upheld the jurisdiction of the courts to determine 
the character of the land involved in a suit brought on 
an adverse claim by lode claimants against applicants 
for a placer patent to the same ground, where such a 
determination is essential to a proper decision of the 
controversy. Incidentally it was held in these cases 
that rock phosphate is properly Iocatable as a lode and 
not as a placer deposit. 

Distinction between bona fide and paper oil placer 
locations was made by the California Supreme Court 
in the case of Smith v. L T nion Oil Co. Neither 
plaintiff nor defendant had made an actual discovery 
of oil. but the junior locator was in actual possession 
and proceeding with due diligence to make a discovery 

January .'!. I'M | 



>>n the ilium wiii.ii the senior locator bad bald I 

irithonl other evidence of title than ■ paper 
■ii Upon iuefa a showing the junior loeator waa 
allowed to quiet title againal the senior. Work done 
on adjoining claims waa ool allowed to eonnl aa die 
m the claim iii dispute. 
An interesting oast arose in Dtah involving the 
meaanre of damagee where one of two oo-tenanta baa 
eztraeted ore and failed to account to the otlnr co- 
tenant for a share of the proeeeds. In this oat 
Silver King Coalition Mines Co. ». Silver King Con. 
solidated alining Co., the curt held that the defraud- 
ing co-tenant was liable only for the value of the ore 
less i ; : mining the same, on the grounds that 
the taking of tl re was lawful although the deten- 
tion of the proceeds might be unlawful, and thai hence 

the less.-r measure of damages should prevail. 

Tl scape of tailing from the Arizona Copper Co.'s 

mill into the Gila river waa perpetually enjoined by the 

United Stales Supreme Court at the suit of riparian 
agriculturists whose lands had been injured by such 
deposits. In addition to the foregoing, a few cases on 
the question of conflicting location boundaries and a 
large number of suits involving the construction of oil, 
gas. coal, and other mining leases have been decided 
during 1013. 

Decisions Expected 

The coming year promises to bring some important 
decisions terminating cases of great national interest. 
Chief among these are the suits brought by the United 
States and private locators to test the validity of 
patents held by the Southern Pacific Railroad Co. 
covering a large acreage of valuable oil lands in Cali- 
fornia. The Kennedy Extension-Argonaut case in Ama- 
dor county, California, involving extralateral owner- 
ship questions, should reach a decision in the trial court 
and the considerable sums which have been accumulat- 
ing as the output of the Argonaut mine during this 
litigation be released. In Arizona there is a condemna- 
tion suit pending between the Inspiration and New 
Keystone Copper companies, the decision of which will 
settle for that state the question of whether mining is a 
public use in view of the existing constitutional and 
statutory provisions. In Alaska, the new territorial 
mining code will doubtless be productive of litigation, 
especially those provisions which require $100 worth of 
labor to be performed annually on each 20-acre sub- 
division of an association placer location even though 
such location may have been made prior to tire enact- 
ment of the code. 

Outside of the field of litigation, interest in the min- 
ing world will centre on the movement which will 
doubtless crystallize into congressional bills looking to 
an entire revision of the mining law of this country. 
Just what will happen it is too early to predict, but 
there is already enough discussion on both sides of the 
question to insure its presentation to Congress from all 
points of view, and to warrant a fair consideration of 
the snbject at the hands of the national legislature. 

Quicksilver Production and Prices 

Bj * i ii imin c Hi\M. 

l>uruiL.' the paat year the quicksilver producers bavc 
experience. | i„,t onlj a decrease in price for their 
metal, broughl about bj London Bales and the effeel 

of the 1ICW tariff sell, Mule, |,,lt 1,,'Ue suffered uitll all 

other industries through decrease of sales ami cor- 
responding increase in stock. Quicksilver is Bome 
thing that consumers do not buy because it is cheap, 

hut because thej absolutely i d it in their business. 

Consequently a decrease in price docs nol mean in- 
crease in sales and increase in mine operations; in. 
stead, as in the past year, it means Btoring what sur- 
plus accumulates and curtailing production an. I es 
pense where curtailment can be exercised without dan 
_ i mils disorganization. The price of the metal i- 
ulated by the London market absolutely, the pnlj 
exceptions being those brought about by the zeal of 
the different agencies to do business. This zeal, for 
tin- past three years, has reduced the price received 
by the American producers from $3 to $5 per Basil 
below the price indicated by the London market. 

The production for the United States is estimated 
at 23,000 flasks, which is below normal. That for 
the past ten years has averaged 25,619 flasks. The 
average price actually received during 1913 was $39.25 
per flask. The average price for the past ten years 
was $41.83 per flask. The gross value for 1913 was 
$902,750; the average gross value for the past ten 
years $1,071,650. Of the 23,000 flasks produced. Cali- 
fornia furnished 18,000; Nevada. 2400; and Texas, 2600. 
Oregon failed to report any production, as did also 
Utah and Arizona. 

The New Idria mine, in San Benito county, Cali- 
fornia, continued to maintain the largest production 
in the United States. The Guadalupe mine, in Santa 
Clara county, California, ranked second, and the Chisos 
mine, in Bewster county, Texas, third. Operations at 
the New Idria mine continue to demonstrate the al- 
most inexhaustible supply of mercury ores that occur 
in the oldest of Coast Range formations, early Cre- 
taceous metamorphic, and of the consistency of this 
belt of material that extends from Lake county in the 
north to San Luis Obispo in the south. At the Oceanic 
mine, in the latter county, operations are proceeding 
with very satisfactory results. Murray Innes, of San 
Francisco, recently purchased this property from the 
Oceanic Quicksilver Co. of Los Angeles. Mr. Innes 
reports that during the past year he has developed 
300,000 tons of ore with a tenor from 8 to 10 lb. of 
mercury per ton, that the ore is very even in grade, 
that the vein is from 20 to 40 ft. wide, and that the 
shoot is 800 ft. long. A shaft from the present fourth 
level is under way, the intention being to sink to a 
depth of 500 ft. It will he interesting to learn what 
the geologic conditions are, when the shaft at the 
Oceanic mine penetrates the sandstone and enters the 



January 3, 1914 

metamorphic formation. At the Gaudalupe mine in 
California the furnaces have been running continu- 
ously, and it is said that developments in the mine 
have demonstrated that there is more ore in sight 
than was extracted in 1913. At New Almaden, the 
Quicksilver Mining Co. ceased mining in June at the 
t'me of the reorganization of the Company. Since 
that time the furnaces have been operated from ore 
gleaned from old dumps by sorting. The Company 
contemplates an extensive development program dur- 
ing 1914. This development will probably consist of 
exploring that territory between Mine hill, where the 
old mine was situated, and the El Senidor mine about 
3% miles distant. Most of the ore mined at New Al- 
maden for the past few years has come from the El 
Senidor and the possibility of more ore in this mine 
is most promising. At the Helen mine, in Lake county, 
California, production has been curtailed while ex- 
tensive development was proceeding. 

The Chisos mine, in Bewster county. Texas, con- 
tinued to operate throughout the year. Other activi- 
ties in the Texas field consisted of prospecting and 
development only. In Arizona, the Cinnabar Develop- 
ment Co., operating the old Colonial mine in west 
central Yuma county, failed to report any production. 
It was rumored that a set of retorts was to be placed 
at this mine to work the rich ore that was found on 
the lower levels. The Sunflower Cinnabar Mining Co., 
with headquarters at Phoenix, Arizona, has taken over 
a property near Cline. in Gila county, and is expected 
to begin the erection of a furnace immediately. 

The Mercury mine at lone, Nevada, continued to 
operate its furnace throughout the year. The Nevada 
Cinnabar Mining Co. completed the erection of a 50- 
ton plant on the lone property. The plant consists 
of a double, four-tile. Mirabel type, Scott furnace, 
and eight double condensers. The plant itself is one 
of the best ever built, but the situation and arrange- 
ment could have been more convenient and better 
adapted to the delivery of the ore from the mine. The 
common brick for the furnace was made on the ground 
from a comparatively weak clay full of sharp angular 
bits of rhyolite, the moulding was done with a soft- 
mud machine : the result was a hard, square, almost 
perfect brick far superior to the common slop brick. 
The Ruby mine, situated about five miles south of 
Tmlay in the Humboldt range, erected a battery of 
twelve 12-in. pipe retorts during the year and had a 
satisfactory run. It is proposed to erect a furnace 
on this property in the spring. The Nevada Quick- 
silver or Goldbank Quicksilver mine, situated about 
40 miles south from Winnemucca. Nevada, has done 
considerable developing and has exposed the largest 
single deposit of cinnabar in the state. There is not 
a great deal of high-£rrade ore, but a large quantity 
of commercial ore is exposed and so situated that 
it can be mined at a low cost per ton. The metal 
occurs generally in an imperfect agglomerate. The 
n irglomerate lies quite flat in parallel bedding, varying 
in thickness from a foot to four feet. These 'reefs' 

of agglomerate alternate with strata of altered rhyo- 
lite varying from a few inches to several feet in 
width and thoroughly saturated with cinnabar. At 
a distance of approximately 300 to 400 ft. is a strong 
fissure filled with opaline material that carries a little 
cinnabar. The evidence of hot-water circulation is 
very clear and the relation of this main fissure to the 
ore-bearing material will prove a most interesting 
study as the work progresses. Upon locating the 
points on the map where mercury occurs in Nevada, 
it is interesting to note the directness of the course 
between them. Beginning at the Pine Forest range 
(reported in 1899) in the north, thence to the Ruby 
mine just south of Imlay, thence to the Goldbank 
in the East Range, thence to the Mercury and Nevada 
Cinnabar at lone, thence to the several deposits about 
Round Mountain, Manhattan, and Belmont, thence to 
a deposit reported as 20 miles east of Goldfield, thence 
to the Fluorine district, 5 miles east from Beatty in 
the south, they are practically in a straight line and 
include 90% of the reported occurrence of the metal. 

Books of the Year 

Cimki.ton. W. H. 'American Mine Accounting.' 367 pages. 

McGraw-Hill Book Co. $5. 
Durham. E. B. 'Mine Surveying.' 390 pages. McGraw-Hill 

Book Co. $3.50. 
Eabl, T. C. 'Gold Dredging.' 208 pages. Sponn & Cham- 

herlin. $8. 
Emmons. S. F. 'Ore Deposits.' 954 pages. American Institute 

of Mining Engineers. $5. 
Fawns. Sydney. 'Radium: Its Production and Uses.' 60 

pages. The Mining Journal. $1. 
Finlay. G. I. 'Introduction to the Study of Igneous Rocks.' 

228 pages. McGraw-Hill Book Co. $2. 
Hatschek, Emil. 'Physics and Chemistry of Colloids.' 94 

pages. P. Blakiston's Son & Co. $1. 
Heather. H. J. S. 'Electrical Engineering for Mechanical and 

Mining Engineers.' 324 pages. D. Van Nostrand Co. $3.50. 
Hofman", H. O. 'General Metallurgy.' 909 pages. McGraw- 
Hill Book Co. $6. 
Hoover, Herbert C. and Lou C. 'Translation of De Re Metal- 

lica.' by Georgius Agricola (1556). 640 pages. The Mining 

Magazine. $8. 
Hoover, T. J. 'Concentrating Ores by Flotation.' 221 pages. 

The Mining Magazine. $3.75. 
IimiNos, J. P. 'Igneous Rocks.' Vol II, Descriptions and 

Occurrence.' John Wiley & Sons. $6. 
Janin. Charles. 'Mining Engineers' Examination and Report 

Book.' Two parts, 94 and 57 pages, respectively. Mining 

and Scientific Press. $2.50. 
Leith, C K. 'Structural Geology.' 169 pages. Henry Holt 

& Co. $1.50. 
Lewis, J. V. 'Determinative Mineralogy, with Tables.' 151 

pages. John Wiley & Sons. $1.50. 
Lindgren, W. 'Mineral Deposits.' 883 pages. McGraw-Hill 

Book Co. $5. 
Lord and Demorest. 'Metallurgical Analysis.' 334 pages. 

McGraw-Hill Book Co. $2.50. 
McCcllqch and Fitters. 'Winding Engines and Winding Ap- 
pliances.' 452 pages. Edward Arnold. $6. 
Ok, Charles (Editor). 'Mineral Industry.' Vol. 21, 1090 pages. 

McGraw-Hill Book Co. $10. 
Paine and Stroud. 'Oil Production Methods.' 239 pages. 

Western Engineering Pub. Co. $3. 
Redwood, Sir Boverton. 'A Treatise on Petroleum.' Third 

edition. In three volumes. 1198 pages. Chas. Griffen 

& Co. $15. 
Richakdson, C. H. 'Economic Geology.' 320 pages. McGraw- 
Hill Book Co. $2.50. 
Riidimiauser and Schoenawa. 'Electric Furnaces in the Iron 

and Steel Industry.' 417 pages. John Wiley & Sons. $3.50. 
Skinner, W. The Mining Manual,' 1913A 1356 pages. Walter 

R. Skinner. $5.25. 
von Bernewitz, M. W. (Editor). 'Cyanide Practice, 1910-1913.' 

732 pages. Mining and Scientific Press. $3. 

; i-Mi 

MIMV. AND >< II Mil I. I'KI S.s 


Metal Prices and Markets in 1913 

Spiciai Oouu»roxi>KM-| nun N»:« Vukk 

Ml III rill, I « > Mi >l Ml I, I I « l\ i ., : 

lii 1611 tii«- metals, slumped In price, apparently in Una with 

ite in that ili.- time* «.ill for a readjustment of the 

coal of raw materlauv The dedlnea wore belped along, ol 

course. I.y Inn Iriaaanlng of business activity In tin- last four 
months of tin- year. Ton Has notable tor I hi- low points 

k, at bom* and abroad. Bnrporte were 

■ i bead tin- lowest Scare tine* February, lilt 

Tin- (salon of antimony was the uiersupply. Pig tin de- 
clined abont iif in the rear. aluminum was graatly af- 

bj tin- saw tariff ami suffered also from the slower 

> of the automobile Industry. 

Ol Ih* nth baring li.-.-n greater hy :..:i":'.'.iL's II. than that 

of February. The do ion showed ■ marked 

.- in the month, in April there waa another lai 

thai on May i being 18,710462 lb. laaa than 
that on April i. The big redaction wai due chiefly to a la- 
in deliveries ol nearly 10, ,000 lb, oyer those of 

March, aboul B, ,000 lb, "t the Increasa being tor export, In 

Ma\ the Block decree ed 3,074,888 lb. leaving on band at tho 

end of the i th 07,664,125 lb. May production ran 6,686,014 

lb. over that of April, while domestic deliveries In, 
about 3,000.000 lb. and those for export decreased 17,608,749 
In June there was a decline in production of nearly l'j.uoO.oot) 




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The production in January — 143,479,625 lb. — was the largest 
ever known for that month and resulted in an increase of 
17,885,750 lb. in the domestic stock of surplus marketable 
copper. In February, for the first time since the preceding 
August, the figures of the Copper Producers' Association 
showed a decrease in stock. The decrease was only 896,134 lb., 
but it marked the turn, after which the stock continued to 
dwindle until October. As the table herewith shows, the low 
point with only 29,793,094 lb. on hand was reached October 1. 
Production fell off in February, but total deliveries increased 
6,251,140 lb. A falling off in surplus stock was expected in 
March, but that it would decrease 18,032,928 lb. as it did, was 
a surprise and the more noteworthy because of the production 

pounds as compared with May, which caused a decrease in 
stock of 14,659,619 lb., despite the fact that domestic con- 
sumption was about 12,600,000 under that of May and that ex- 
port deliveries fell oft slightly also. The lessened production 
was in part due to the strike at the Nichols refinery on Long 
Island. August 1 there was an increase in stock of 690,339 
lb., domestic consumption in July having fallen off nearly 
10,000,000 lb., while foreign deliveries Increased 10,000,000 lb. 
September 1, the stock had dropped to 38,314,037 lb., a decrease 
of 15,2S0,908 lb. from that of August 1. The nearest previous 
low record was 44,335,004 on July 1, 1912. Production in 
August declined nearly 7,000,000 lb., while domestic deliveries 
were 14,745,609 lb. over those of July; with foreign deliveries 
over 5,000,000 less. The September production was 131,401,- 



January 3, 1914 

... about the same as that for August, but at the end 
of the month the stock had decreased to 29,793,094 lb., the 
smallest tor any month since the first publication of the 
figures of the Copper Producers' Association about five rears 
before, the nearest previous low stock having been that of 

Septet n i 1913. The figures of the Copper Producers' Asso- 

coupled with those of Henry B. Merton & Co. Ltd., 
London, England, showed the world's visible supply on 
l, 1913, to be 41,119 tons, a reduction of 10,030 tons 
us compared With September 1 and the lowest supply on 
record. From October 1, the stock increased, gaining in the 
month ^,TT::,2ns lb. Production in October increased 7,669,252 
lb., and domestic deliveries increased 1,336,S23 lb., while 
foreign fell off 4.961,802 lb. November brought a decrease 
of *,982,773 H). in production, but nevertheless an increase of 

; hit lb. in stoek was shown December 1, because of the 
heavy falling off in domestic deliveries. They decreased 
19,616,862 lb. from those of October and totaled but 48,666,858 
lb., the lowest in any one month for nearly two years, the 
previous low record having been in January 1911, when about 
12,000,000 lb. was delivered. Deliveries for export in 
November were 70,067,803 lb. or 1,944,330 lb. over those of 
. b ber. Following tables show the United States production 
and deliveries, and the domestic surplus stock at the begin- 
ning of each month as presented by the monthly statements 
of the Copper Producers' Association: 

Domestic Deliveries 
Production. Deliveries, for export. 

Total for 1911 1,431,938,338 709.611,943 764,932,733 

December. 1912 143.354,042 58,491,732 66,718,796 

Total for 1912 1,581,920,287 819,666,947 746,396,462 

January, 1913 143,479,625 65.210.030 60,383,845 

February 130,948,881 59,676,492 72,168,523 

March 136,251,849 7i;.:is:,.471 77. 699.306 

April 136,333,402 78,158,837 85,894,727 

May 141,319,416 81,108,321 68,285,978 

.)„ne 121,860,853 68,462,671 68,067,901 

July 13S.074.602 58,904,192 78,4S0,071 

August 131,632.362 73,649,801 73,263,469 

September 131,401,229 66,836,897 73,085,275 

October 139.070.4S1 68,173,720 68,123,473 

November 134,087,70S 48,656,858 70,067,S03 


December 1, 1912 86,164,059 

January 1, 1913 105,312,582 

February 1 123,198,332 

March 1 122,302,198 

April 1 104,269,270 

May 1 75.549.10S 

June 1 67,564,225 

July 1 52,904,606 

August 1 53,594,945 

September 1 38,314,037 

October 1 29,793,094 

November 1 32,566,382 

December 1 47,929,429 

The total of copper exports from the United States in eleven 
months of 1913 as compiled by C. Mayer, secretary New York 
Metal Exchange, was 352,157 tons, against 298,491 tons in the 
same period of 1912. In the first 11 months of 1913 Germany 
took 134. 5S5 tons as against 107,172 tons in the same period 
of 1912. In 12 months of 1912 total exports were 327.965 tons; 
in L9U, 336 101 ions; in 1910, 30f,935 tons, and in 1909, 301,- 
667 tons. Mr. Mayer figured the total importations in 10 
months of 1913 by steamers and railroads, including ores, 
matte, and regulus reduced to fine copper, to be 152,000 tons, 
against 14S.000 tons in the same period of 1912. 


January was ushered in with the market quiet, but strong, 
at 17.75c. cash for Lake and 17.60c. to 17.62'jC. for electrolytic. 

The closing days of 1912 had seen good buying. The metal 
was tightly held by the large interests, but could not with- 
stand the unfavorable showing of the Copper Producers' state- 
ment for December. With the appearance of these figures 
which showed an increase in stock on January 1 of 19,000,000 
lb. over Deveriiber 1, 1912, a decline set in which was helped 
along by the unsettled Balkan condition and violent fluctua- 
tions of copper abroad and by January 20, Lake was selling 
down to 16.25c. cash and electrolytic at 16c. Then came a 
turn upward and at the end of the month, 16.25c. cash was 
quoted for electrolytic and 16.50c. for Lake. Large sales were 
made in the month. Early February was unsettled and there 
were predictions that the price would drop to 15c. and at the 
end of the month, Lake was quoted at 15c. cash and electrolytio 
at 14.75c. The lower prices stimulated buying and one of the 
best movements of the year resulted. In the first few days of 
March a better demand from Europe started prices upward 
and by March 31 successive advances carried Lake to 15.37 '-c. 
cash and electrolytic to 15c. An additional cause of strength 
was the Copper Producers' statement showing that stock in 
February had fallen off nearly 900,000 lb. Unsettled political 
conditions abroad, the Balkan war then being in full swing, 
tended to restrict European buying, but toward the end of the 
month, the tension abroad eased up and foreign consumers 
came into the market strong along with domestic buyers, 
which caused prices to take an upward trend which they pur- 
sued throughout April. At the end of the latter month, Lake 
was quoted at 15.75c. cash and electrolytic at 15.62%e. The 
March report of the Producers' Association which showed a 
further reduction in stocks of 18,000,000 lb. was a strong bull 
influence. The buying, especially for Europe, continued good 
until almost the middle of April. Lake was becoming scarce 
and about this time the labor troubles in the Lake Superior 
District began to attract attention. European uneasiness 
caused by unsatisfactory conditions in southeastern Europe re- 
sulted in electrolytic dropping a few points in the early part of 
May, but it soon recovered and by May 10, 15.75c. was quoted, 
but it did not hold and at the end of the month electrolytic 
was quoted at 15.50c. and Lake at 15.75c. On a basis of 
15.62Vic cash there was fair dealing in electrolytic early in 
May. The producers' statment for April, showing a reduction 
in stock of over 28,000,000 lb. greatly strengthened the market. 
June set in with Lake at 15.75c. cash and electrolytic at 15.25c. 
cash, but the month brought weakness and it closed at 15c. 
cash for Lake and 14.62%c. cash for electrolytic. The brass 
mills about this time began to note a decline in new orders. 
Toward the middle of June there was good buying, followed 
by quiet to the end of the month. Prices of brass and copper 
products weakened in June. The course of July was down- 
ward, though prices strengthened in the last week of the 
month. They dropped to 14.50c. cash for Lake and 14.12%c. 
cash for electrolytic (July 15) then turned upward and July 
31 were 15.25c. cash for Lake and 15.12%c. cash for electrolytic. 
The last week of July brought activity in electrolytic, but 
Lake was nominal. In August the trend was upward and at 
the end of the month Lake was quoted at 16.12%c. cash and 
electrolytic at 16c. Lake copper continued hard to secure be- 
cause of the strike in Michigan and tight holding of the 
available supply, but there was some buying of it in the second 
week of the month, which was checked by advancing prices. 
Late in August, the Lake situation began to clear up slowly. 
In September the range of prices was from 16.25c. to 17c. cash 
for Lake and 16.12%c. to 16.75c. cash for electrolytic. Prices 
were at their highest in the third quarter of the month, 
after which they declined and October began with Lake at 
16.62i-'jC. and electrolytic at 16.50c. The strength which was 
gained was almost entirely due to the diminishing stocks. 
Good buying attended the rise in prices, while Lake became 
harder to obtain than ever. In the latter part of October it 
became apparent that the big agencies were well sold up and 
second hands tried to force action by offerings at concessions 
but they aroused no inclination to buy. Prices fluctuated in a 

Januar) :. I'll 


iiwir *»r i' '■ "' ''"' ■••lb 

ike and II ■ :i "'' 9 > 

tlii« time until near UM end ol the year there was little bOJ 

loa of eoppar, although 
i iteadllj nntll 

looted it bad baan believed tbal eonamnan 

would to Ihi> for December, but the bopai did noi 

nmi.-riaii/f mi. I the big well aa Meand bands i una 

down 111 prleaa There waa nl no! nearly n» 

much *■ hud baan looked for in tin- latter port of November 
it was no I01 ■ tbal nan ordara for brass and eoppar 

products bad fallen off sharply with the gl -nornl decline III all 

llnaa and radoeUona In prli ■ raanlt Bome ol 

the mills went on four ami five day time and their si.. 

eoppar on band were mfflelanl to carry tban along without 
the necessity of baying. In December there was little buying 
and December ::;. Lake waa i *.»._• ' .. •-. and electrolytic 14.87 He. 

The average prices paid for copper by the brass mills In the 

nek Vaiu-y (Waterbury average) in 1918 were as fol- 

Cents. Cents. 

December. 1912 17.75 June I 

January. 1918 17.00 July 1 1.76 

February 15.50 August 15.68% 

March 15.12% September 16.87% 

April 15.75 October 16.87% 

May 15.87':. November 16.25 


This metal began the year at 7.30c. New York and 7.17 'jc 
St. Louis, and at the end of November was about 5.15c. New 
York and 5c. St. Louis. It dropped to 6.80c. New York in 
January. In that month German spelter was Imported and 
sold at or near 7.05c. on the Atlantic seaboard. Fears as to 
results the new tariff might cause was an unsettling influence 
on the market In the greater part of the year. In February, 
prices dropped to 6.25o. New York and 6.10 St. Louis. In 
March, demand was good, the trend turned upward and prices 
advanced to 6.40c. New York, and 6.25c. St. Louis, but the 
strength did not last long and the month closed at 5.85c. New 
York and 5.70c. St. Louis. In April, prices declined further, 
demand having been satisfied, and the market in consequence, 
being quiet. In this month large quantities were being de- 
livered against old contracts to both brass mills and galvaniz- 
ers. In May quotations had dropped until near the end of 
the month they were about 5.35c. New York, and 5.20c. St. 
Louis, and dullness was the principal feature. In June, when 
quotations touched 5.10c, New York, and 4.95c, St. Louis. 
business was slow, but it picked up at the end of the month 
and the New York prices advanced to 5.30c. In early July 
there was good buying and in that month prices mounted to 
5.60c. New York, and 5.45c St. Louis. In August, business was 
fair and quotations advanced to 5.90c. New York and 5.75c. St. 
Louis. The advances were accelerated by strike troubles in 
the West and higher prices of ore. Not until about the mid- 
dle of September did prices begin to decline again, but after 
that time they came down steadily and on September 30, the 
New York price was 5.60c In September, foreign spelter was 
again offered but found few purchasers and this time it was 
said that consumers preferred the domestic metal with the 
qualities of which they were more familiar. October saw a 
continuance of the decline, and the month closed with the 
New York quotation at 5.40c Steady declines and little busi- 
ness were the features of November and on December 1, quo- 
tations were 5.15c. New York and 5c. St. Louis. These held 
to December 23, up to which time busines was light. 


Throughout January, February, March, and until April 22, 
lead quotations were 4.35c New York and 4.20c St. Louis. On 
the date named the A. S. & R. Co. advanced quotations to 

I.. . IBM the DTiOI for SI Unil. 

.ii. ■ demand arai maintained and, 

Intermittently, | i on 

in the iiuirt had Um effect ..r reetralnlng i>ik bnatnoai v.-i 

when the I. in... o| the new tariff bill, 00 fur U the] pertuli 

to lead, became more concrete, they bad little effect on the 
market n ere pointed onl thai the tariff would onlj 
to prevent prlct fron) tearing. The advance to l.60i 
accompanied by the itatemenl that the price im.i 
low. The 1.60c, price bold nntll Kay 5, whan than 

dUCUOD to 1.86c. New York mill 1.20c. St Louis again, the 

reason announced tor the change being that demand bad 
Blackened. A.I 4.86c. New fork, the Uonary 

through the remainder ol May, June, and until July 89, when 
quotations went to 4.60c New Fork, and 1.86c. Bt Louie, again. 
The st. Louis price bad varied 8% points al times, in June 
the metal wns high ami going higher and (ear was entertained 
of London coming to New York and upsetting this market 
It proveB, however, thai the London market was bolstered up 
b] a corner which did not hold. Meanwhile domestic buyers 
proceeded slowly. In early July, consumers began complain 
ing of their new business showing a falling off, hut latter in 
the month they bought more freely their Btocks having be- 
come very small. The 4.50c. New York price announced July 
29, held until August 16, when the A. S. &. R. Co. advanced Its 
New York price to 4.75c At St. Louis 4.05c was quoted at 
this lime. Rumors of labor troubles in Missouri which culmi- 
nated in a strike in August strengthened the situation, as did 
a good demand that came about the middle of August. When 
the strike was declared, August 15, the A. S. & R. Co. with- 
drew from the market for a few hours, then announced its 
advance to 4.75c. The price held until September 25. when 
independent interests came down to 4.70c New Y'ork, and 
4.55c St. Louis. Meanwhile the aspect of the lead situation 
had been changed by the settlement of the strike in the latter 
part of August Demand began to subside and finally came the 
reduction by independents. On October 1, the A. S. & R. Co., 
which had been feeling the underselling by other companies 
came down to 4.60c New York and 4.45c St. Louis. The 
competition continued and October 8, the big interest came 
down to 4.50c New York and 4.35c. St. Louis again. Further 
cuts followed, in the anxiety to get business, and on October 
16, the A. S. & R. Co. reduced its quotations again, this time 
to 4.35c New York and 4.20c. St. Louis. Outside producers 
followed. With other metals declining on every side, lead held 
its own through the remainder of October and to November 26 
when the A S. & R. reduced its prices to 4.25c New York and 
4.10c St. Louis. Business was light at the time and keenly- 
competed for. December 2, the price came down to 4.00c New 
York. Toward the end of the month greater strength de- 


In January both dealers and consumers were overloaded with 
antimony owing to a more or less frenzied buying on a rise 
late in 1912 and there was on all sides pressure to sell at 
about 9.75c for Cookson's. 9.37%C for Hallett's and 9c, 
other grades. By February. Cookson's had weakened to 9.45c. 
The market continued lifeless through February and March 
brought no betterment, and some dealers were inclined to with- 
draw from the market rather than force sales. In April Hal- 
lett's dropped to 8.50c, and Chinese and Hungarian brands to 
7.50c Second hands, anxious to sell, offered Hallett's at 
8.12%c. in April. May brought still lower prices. Cookson's 
being offered at 8.70c, Hallett's at 8.20c and Chinese and 
Hungarian grades at 7.50c The decline continued in June, but 
the market was otherwise featureless. In July the inactivity 
continued and prices were lower. In this month government 
statistics showed that there was in bonded warehouses about 
4,500,000 lb. of antimony, which had been Imported in antici- 
pation of lower tariff duties. This amount approximates a 



January 3, 1914 

years supply. August closed at 7.75c. for Halletfs, 8.35c. for 
Cooksou s and 7.3714c. for other grades Prices in September 
were unchanged. Toward October dealers were withdrawing 
from warehouse only metal which they had actually sold. 
After the new tariff became effective on October 4. the big 
supply in government custody was more freely drawn upon 
and the market slumped. The low quotations for October 
were 7.25c. for Halletfs. 7.62%C for Cookson"s, and 6.50c. for 
grades. In November there was a further decline of 
about 12'>j points for all grades, with business extremely 
slow. Conditions were unchanged in December. 


On January 2, pig tin for prompt delivery sold at 50.60c. and 
while it mounted to 51c. and dropped to 49.85c. in the next 30 
days, the month closed at 50.15c, quotations which were partly 
sustained by the scarcity of spot metal. At, or near, the high 
prices a good business was done. Toward the end of the 
month the shortage was relieved by heavier importations. At 
the auction of 2500 tons of Banca tin in Holland January 29, 
the price obtained was 137 "i florins, equal to about 50c, c. i. f. 
New York. January deliveries totaled 3700 tons. In Febru- 
ary prices weakened throughout the month, 49c. being touched 
February 3, followed by fluctuations in which declines were 
greater than the recoveries, until on February 28 the price 
was 47.55c Business was fairly good in the early part of the 
month and the chief cause of the reduction in price was the 
decline In London prices. In February a shortage of spot 
supplies was again feared and stimulated buying to cover short 
contracts. It developed at this time that American consumers 
were overbought and many of them were embittered by the 
fact that prices began to decline as soon as they had loaded 
up, not in itself a new story. February deliveries were 3500 
tons. In March the metal declined from 47.75c. on the third 
day of the month to 45.70c on the 17th, then gradually picked 
up again until 47.90c. was quoted March 31. London early in 
the month was erratic, reflecting anxiety over the Balkan 
situation. Through March buying was intermittent and not 
extremely heavy at any time. About the middle of the month 
about 320 tons of Chinese tin arrived on vessels from Chinese 
ports which was unusual for this port. Deliveries in March 
reached the record breaking total of 5900 tons, the nearest 
previous high figures having been 5400 tons in April, 1912. 
April ushered in a rising market again and on the 14th of 
the month tin touched 50c On April 17. 50.10c. was quoted, 
after which it declined gradually until April 30, when the price 
was 49.87%c. Foreign influence caused the rise. It was a 
market in which consumers had little faith and consequently 
they did little buying. Deliveries in April totaled 3450 tons. 
In May, prices hovered around the 50c level until the middle 
of the month when a decline set in, and May 31 the price was 
47c As a rule business was dull throughout the month. The 
sale of 2500 tons of Banca, in Holland, May 28, realized 135% 
florins equivalent to about 49.45c, c. i. f. New York. Deliveries 
in May were 3350 tons. June prices ranged between 46.60c. 
at the opening of the month and 42.50c at the close, the de- 
cline being practically without a break. Excepting at inter- 
vals the market was quiet in June and speculation was evi- 
dent in what buying there was. In the second week. of the 
month 100 tons of Banca for which sale could not be made 
was returned to London. In the third week liquidation in 
tin holdings was forced in London because Vienna speculators 
could not obtain extensions of loans wherewith to finance their 
operations and this brought about, lower prices. In 4 days, 
tin declined £12 in London. June deliveries were 3S0O tons. 
In July prices came to 39.35c (July 14) after which they 
rallied and crept up to 40.60c, at which August opened. In 
July consumers were using metal for which they had paid up 
to 48c Now and then there was a day of good buying. The 
July sale of Banca in Holland, when 2500 tons were disposed 
of, brought 111% florins, equal to about 40.60c c i. f. New 
York. The low price caused weakness both abroad and here. 

July deliveries were 3900 tons. Throughout August tin was 
steady at about 41c. The lack of any considerable fluctuation 
was unusual. Trading was not heavy in the month, although 
on a few days lair buying was reported. Deliveries against 
old contracts were heavy. In August, 3600 tons were delivered 
to consumers.* In September prices mounted to 43.S0C, but they 
were more irregular than in the previous month and Septem- 
ber 30, stood at 41c again. Features were lacking, except that 
the September sale of Banca realized 116V6 florins equal to 
about 42.30c, c i. f. New York. September deliveries were 
3100 tons. In October prices again pursued a rather even 
course and at no time were far above or below 40.35c. while 
business was light, and it was conceded generally that con- 
sumption was falling off. October deliveries were 3700 tons 
which exceeded all estimates for the month. In November, 
the downward course of prices continued, 39.25c being touched 
early In the month, which closed at 39.50c At no time in 
November was 40.25c exceeded. Business was fair at times, 
but not satisfactory and it was apparent that consumers had 
plenty in stock, adding their purchases to the stock which 
they were enabled to carry over because of the smaller demand 
for their products. The November Banca sale brought an 
average price of lOO-^i florins, equal to about 40c c i. f. New 
York. Deliveries were light, amounting to 2800 tons. With 
little trading, December presented few features. By Decem- 
ber 23, the price dropped to 36.62' ji\ 


At the beginning of 1913, the market was about 26.50c, 
whereas late in December It was 18.50c to 19c for prompt 
delivery domestic. Consumption was good in the early part 
of the year and prices went up a few points in March, 86.87 ,< 
to 27.12'jc. being quoted for prompt shipment domestic. From 
this month on, the course of prices was downward; the lowest 
of each month being approximately as follows: 26.75c. in 
April, 25c in May, 23.50c in June, 23c in July, 21.50c. in 
August and September, 19.75c in October and 18.50c in 
November. In May there were especially heavy deliveries, and 
these led to resales and lower prices, the decline being helped 
along by apprehension over the then impending tariff changes. 
an influence which was felt until the new duties became 
operative. Pending the inactment of the bill there was 
accumulated in bonded warehouses a large quantity of the 
metal and this had a depressing effect upon the trade. The 
imports in August were 1,336,835 lb. as compared with 576,252 
lb. in August, 1912. Later In the year a further depressing 
influence was the slower extent to which automobile manu- 
facturers were purchasing. Throughout the year prices of 
foreign and domestic were close together and often on the 
same level. The slight difference, when there was any, was 
in favor of domestic. In late December, both foreign and 
domestic prompt metal were quoted at 18.75c to 19c 

The Metal Markets 


San Francisco. December 31. 
San Francisco Is not a primary market for the common 
metals except quicksilver. The prices quoted below therefore 
represent sales of small lots and are not such as an ore pro- 
deer could expect to realize. Ore contracts usually call for 
settlement on the basis of Eastern prices, less freight and 
treatment charges. The prices quoted are in cents per pound, 
except in the case of quicksilver, which is quoted In dollars per 
Mask of 75 pounds. 

Antimony 9 — 994c 

Electrolytic copper 15% — 1694c 

Pig lead 4.40— 5.8S 

Quicksilver (tlask, $40 

Tin 41 — 42 %c 

Spelter 6%— G^ic 

I Zinc dust. 100 kg. zinc-lined cases. 7% to Sc. per pound. 

Janunrs 1. 1914 


i:km:ii\ nmi ntliKRI 

I I U ■ ' : ! k > 

nninl tons ol U>< <• 

I I. i.t.lloi 

ii l> llml III 

nil* til 

lopmcnta of 

; : Islng. 

-II \ IK 

•i ^ Ork quotations In 


' Sunday 

57. «! 


•• J| 57.s; 


J Bn 56.35 63.01 

69.06 II II 

SS.37 67.87 

Apr 69.30 69.36 

May 60.88 60.31 

Juno 61.29 69.03 




Monthly averages. 

AiiTNRf Wei k c-ndln 
Nov. 19. 





July 60.67 


Sepl ■ 





Quotations mi copper as published In this column represent 
oleaale tram n the New Yurk market and 

refer (■• eleotrolytli pper. Lake copper '-'immands normally 

i i. per Ih mini- Prlcea are In cents per pound. 


Ii. . 

• H'llday .... 


27 14.88 

18 Sunday 


30 14.76 

31 14.75 


Average week ending 



. .14.62 


11 ll 



14 17 





Monthly averages. 

1912. 1913 

Jan 14.09 16.54 

14.08 14.93 

14.68 14.72 

Apr 15.74 15.22 

16.03 16.42 

Juiie 17.23 14.71 


Julv 17.1!i 

Auk 17.49 

Sepl 17.56 

Oct 17.32 

Nov 17.81 

Dec 17.17 

n; 88 
1 1.26 





Is quoted In rents per pound or dollars per hundrt 
New York delivery. 

25 Holiday 



2< Sunday 





Average week ending 


If 12. 

. 4.43 

. 4.03 

. 4.07 

. 1.20 

. 4.20 

. 4.40 


Monthly averages. 

















1 Oil 





1 :il 




Zinc is quoted as spelter, standard Western brands, St. Louis 
delivery. In cents per pound. 


Dei 26 Holiday 

•■ 26 

" 27 

" 28 Sunday 

" 29 

" 30 

" 31 



Jan 6.4 2 

Feb 6.50 

Mch 6.67 

Apr 0.03 

May 6.68 

June 6.88 

... 5.13 
... 5.13 
.. . 5.13 
Monthly averages. 

Average week emllng 



5. IIS 







Julv 7.12 

Aug 6.90 

Sept 7.45 

Oct 7.30 

Nov 7.32 

Dec 7.09 



New York prices control In the American market for tin. since 
the metal is almost entirely Imported. San Francisco quotations 
average about 5c. per lb. higher. Below are given average 
monthly New York quotations, in cents per pound: 
Monthly averages. 

1D12. 1913. 

Jan 42.53 50.45 

Feb 42.96 49.07 

Mch 42.58 46.95 

Apr 43.92 49.00 

May 46.05 49.10 

June 45.76 45.10 

1912. 1913. 

July 44.25 40.70 

Aug 45.80 41.76 

Sept 48.64 42.45 

Oct 50.01 40.01 

Nov 49.92 39.77 

Dec 49.80 37.57 


The primary market for quicksilver is San Francisco, Cali- 
fornia, being the largest producer. The price Is fixed In the 


Week ending 1 ■■■■ 1 • 
I 1 1 1 

"ll I" II" 

Monthly averagea, 

1912. 1911. 

Julv I : "" 1 


12.11 39.70 

11.60 29.27 

11.60 39.40 

39.76 I 


I Hill' 





\i:\\ YORK >n 1 \i >iiiim:t iii:\ii.« 
Copper «as quiii iii December and prices declined Bpelter 
was not active, inn gained strength, Used saw much e peti- 
tion, ami there were repeated reductions by the lai 
teres! which were followed by the Independents. At the end 
of the month a change toward higher prices was Indicated 

Antimony was without feature. Pig tin dropped to the low 
figure of 86.62V&0. for prompt and sales were light. Aluminum 
dropped a few points and showed but little life. 

Copper was quiet from the first to December 2.1 and there 
were no Indications on the latter date of any heavy business 
before 1914. Prices continued their course downward, the 
month opening with Lake at 16.12%C and electrolytic at 
1 1.622 ._.(.., while on December 23. Lake was 14.62M.'C. and 
electrolytic 14.37'oC. European deliveries were better than 
the domestic. Exports to December 22 were good, totaling 
24.999 tuns. 

Spelter prices held up in December better than did the 
others, quotations standing from December 1 to 23 at 5.15c. 
New York and 5c. St. Louis and gaining strength as the 
month came near its end. There were no features of special 

Lead prices on December 2 were reduced by the A. S. & R. 
Co. from 4.25c. New York to 4.10c. New York, the former price 
having been established on November 26. On December 9. 
the big interest announced a reduction to 4c. New York at 
which figure it stood throughout the month. The principal 
reason for the series of reductions was that independent com- 
panies had been steadily underselling the big company and 
getting most of what business there was to be had. The metal 
had not been on the same level before since February, 1912. 
At 4c. the A. S. & R. Co. took practically all of the business, 
but there was not much stirring. Late in the month greater 
strength developed in St. Louis and the price there crept 
up to 3.95c. In the early part of the month it was reported 
that the A. S. & R. Co. had ordered the closing of all its 
smelters in Mexico, including the Monterey smelter, employing 
over 2000 men. In all 7000 employees were said to be af- 

Antimony markets were glutted In December, otherwise de- 
void of feature. Prices were practically stationary at 7c. to 
7.25c. for Hallett's, 7.40c. to 7.50c. for Cookson's and 6c. to 
6.60c. for other grades. 

Tin prices became lower in December until on December 23 
the quotation was 36.62%c. for prompt deliveries. London 
was very weak toward the end of the month and the news 
from that city was pessimistic. On only a few days in 
December was there good buying. The total visible supply 
November 30, 1913, was 14,470 tons against 12,348 tons 
November 30, 1912. In the eleven months of the year there 
was a decrease of 4650 tons in deliveries, as compared with 
the same period in 1912. 

Aluminum in the early days of December for both domestic 
and foreign delivery was quoted at 19c. The demand was 
poor, though the month was said to have brought an improve- 
ment to the automobile trade and consequently a better de- 
mand was expected to develop for aluminum. About the 
middle of the month prices, with domestic and foreign still 
on the same level, were 18.75c. to 19c. where they stood as 
the month was nearing its close. 



January 3, 1914 

The Stock Markets 

Mineral Statistics for 1913 


(San Francisco Stock and Bond Exchange.) 


December 30. 

Listed. Bid 

Associated Oil 6b 8 97} 

E. I. du Pont pfd 84 


Ass. Oil 58 — 

Listed. Bid 

Amalgamated Oil 74 

Associated Oil 89} 

Glanl 84 

Pac. Cst Borax, pfd 65 

Pacific Crude Oil — 

Sterling O. A D_ — 

Union Oil 66 





General Petroleum 6s 







Pac. Port. Cement 6s.. 
Santa Cruz Cement 6s 

Noble Electric steel... 

Natomas Consol..., 

Riverside Cement 




Santa Cruz Cement... 
Stand. Port. Cement .. 



(By courtesy of San Francisco Stock Exchange.) 
San Francisco, December 31. 

Atlanta S .15 

Belcher .64 

Belmont. 7.50 

Big Four. .10 

Cash Boy 08 

Florence 26 

Goldfleld Con 1.42 

Goldneld Oro .08 

Halifax 1.25 

Jim Butler 76 

Jumbo Extension 14 

MacNamara 09 

Mexican. l.lfi 

Midway 38 

Mlzpah Extension 8 • 

Montana-Tonopah 1. 

Nevada Hills 

North Star 


Pittsburg Sliver Peak . 

Round Mountain 

Sierra Nevada 

Tonopah Extension 1. 

Tonopah Merger 

Tonopah of Nevada 7 

Victor . 

West End 1 

Yellow Jacket. 


(By courtesy of J. C. Wilson. Mills Building.) 
December 31. 


Allouez 8 35 

Ariz. Commercial 41 

Butte & Superior 31) 

Calumet & Arizona... 63] 

Calumet & Hecla 425 

Copper Range ■ 37) 

Daly West 2 

East Butte II 

Franklin 3) 

Qranby 74 

Greene Cananea 30 

Isle-Royale , 18) 

Mass Copper 2J 








.8 14) 


North Butte 

. 28 


. 50) 


. 60 



Shannon . 

. 6) 


Superior & Boston.... 

. 2j 


. 29} 


U. S. Smelting, com. 

. 40 


Utah Con 

. 8) 
. 3 




. 44 



(By courtesy of E. 


Braden Copper.. 7 

Braden 6s 148 

B. C. Copper 2 54 

Davis-Daly 1% 

Dolores 2 

El Rayo 1 

Ely Con 1 

First Nat 2% 

Glroux % 

Iron Blossom... 1H 

Kerr Lake 4% 

La Rose 1 % 

Mason Valley. . . 3% 

F. Hutton & Co 
December 31. 

Kohl Building.) 





McKinley-Dar. . 1 
Mines Co. Am. . . 2 

Niplssing 7 94 

Ohio Copper .... % 

San Toy 15 

Sioux Con 1 

So. Utah % 

Stand. Oil of Cal.260 

Trl Bullion Vs 

Tuolumne % 

United Copper.. % 

Wettlaufer 7 

Yukon Gold 2 








(By courtesy of J. C. Wilson, Mills Building.) 

December 31. 

Bid Ask 

Amalgamated 731 734 

Anaconda 354. 35) 

A.S. 4 It 63} 64} 

Calif. Pet 18} 19) 

Chlno :»; 39) 

Mexican Pet 46 46) 

Miami 21) 22 

Bid Ask 8 1) 2 

Ray Con 181 18) 

Tenn. Copper 3:1J 33} 

I . s. steel, pfd 106J 1061 

0. S. Steel, com 58) 69 

Utah Copper 60) 501 

South Dnkotn mines produced gold worth $7,200,000 In 
1913, against (7,891,870 in the previous year. Silver output 
fell from 206,160 to 161,800 oz. A small quantity of lead and 
copper was produced, according to Charles W. Henderson, of 
the U. S. Geological Survey. 

Michigan copper mine* produced 105,000.000 II). of metal, 
or at the rate of 210,000.000 lb. per year, during the first 
hall of 1913; but on account of the miners' strike, whir] 
n on July 23 and is still partly on, the year's output 
will be only about 145,000.000 lb., according to R. H. 
Maurer. The average price received for copper was 15.5c. 
per pound, making the sross value of J22.500.000. Nine com- 
panies distributed J8.344.7S8 In dividends during the term. 
The principal producers in 1013 were as follows: .Calumet & 
Hecla. S3. 420,000 lb.; Osceola. 11,688,000 lb.; Champion, 
11.148.000 lb.; Quincy. 10,891.800 lb.; Ahmeek, 9.100.000 II).; 
Baltic, S. 686,000 lb.; and Mohawk, 5,369.000 pounds. 

New Mexico made increases in its mineral production dur- 
ing 1913, according to Charles W. Henderson, of the U. S. 
Geological Survey. The output of gold showed an increase 
of 8100.000 over the $781,446 in 1912; that of silver, an In- 
crease of 100.000 oz. over the production of 1,536.701 oz. In 
1912; lead, a decrease of 800,000 lb. from the yield of 5,494.- 
018 lb. In 1912; copper, an Increase of 20,000,000 lb. over 
the yield of 34.030,964 lb. in 1912; and zinc (figured as spel- 
ter or zinc in zinc oxide), an Increase of 8,000.000 lb. over 
the output of 13,566,637 lb. In 1912. Despite lower average 
yearly prices for copper and zinc, the total value of the 
output was $11,620,000, an increase for 1913 of over $3,000,000. 

Alattkan mtncM produced $18,900,000 in minerals during 
1913. according to Alfred H. Brooks, of the U S. Geological 
Survey. The value of the gold output is estimated at 
$15,450,000; that of 1912 was $17,145,951. There was a 
marked decrease In copper production, that of 1913 being 
estimated to have been 19,700,000 lb., valued at about 
$3,014,000. while that of 1912 was 29,230,491 lb., valued at 
$4,823,031. The silver output Is largely a by-product of 
gold and copper mining, and showed a decrease In value 
from $316,839 In 1912 to about $220,000 In 1913. Other min- 
erals. Including marble, gypsum, tin, etc., are estimated to 
have been produced to the value of $220,000, or about the 
same as that of 1912. 

Callfornin'M mineral production during 1913 was valued at 
over $95,000,000, according to the State Mining Bureau. This 
Is an Increase of $4,000,000 compared with the previous year. 
The petroleum output was approximately 93,000.000 bbl., 
valued at $43,500,000. increases of 3,500,000 bbl. and (1,600,- 
000 respectively. Deep mining, dredging and higher operat- 
ing efficiency keeps up the gold yield to about $20,000,000 
per annum. There have been few changes In the copper 
mines, whose metal was worth about $5,500,000. The cement 
output increased in value by $2,000,000 to $8,000,000. Crushed 
rock and granite production was $6,000,000; brick. $3,000,- 
000; natural gas, $1,250,000; borax, $1,000,000; silver, $800,000; 
and quicksilver, $750,000. The minor mineral products 
showed normal activity and growth. 

Coal production of the United States in 1913 was between 
565,000.000 and 575.000.000 short tons, against 534,466,580 In 
1912. according to the U. S. Geological Survey. Of the In- 
crease, about 4,500,000 tons was from the anthracite mines. 
There were a few labor disturbances In 1913, but they were 
local in extent and effect. The most pronounced labor dis- 
affection was in Colorado, where a general strike was called 
about the middle of September, and coal production in that 
state during the last quarter of the year was but little more 
than 50% of normal. There was general complaint, par- 
ticularly in the Eastern states, of shortage of labor and in- 
ability on the part of the operators to keep their mines 
working at full capacity. This was probably the reason for 
less than the usual complaint of the inadequate or Insuffi- 
cient transportation service. Coal-mlnlng, like all other In- 
dustries In the Ohio Valley states, was seriously Interfered 
with by the floods In that region during the spring of 1913. 


Referring to the description of the Irving process on page 
77. Mr. Austin adds that the ferrous sulphate may be re- 
_ nil! as heitiK changed to ferric sulphate according to 
( 6 ) 2PeSO. + HLSO, + O = Fe, ( SO. ) , + H s O 

He corrects the analysis of original ore on page 78 to read: 
gold, 0.01%; copper, 1.68. 

Juoib :. l'.'H MINING AND St II N I II K I'M S.S ,1 

In November 1909, the House of Lords, England, delivered a unanimous judgment in favor of 
the Minerals Separation, Ltd., in an action brought by the Elmore Process. A similar judgment 
wu given July 24, 1911, by the New South Wales Court in an action brought by the same plaintiff. 

In July 1913, in the United States District Court for Montana, The Minerals Separation Process 
patent was completely upheld and adjudged valid in respect to all claims in issue. This was in a 
suit instituted by Minerals Separation, Ltd., for infringement. 

The Minerals Separation 
Flotation Process 

Is a General Method of Separating Sulphide Minerals from Gangue 

The application of tins method is being extended constantly to cover separations hitherto 
considered impracticable. The newer modifications being developed and used have greatly re- 
duced the eOBts of operation and al the same time have increased recoveries and grade of concen- 

No Mine Owner or Mine Manager Can Afford to Ignore the Developments 
Which Have Been Made in This Method of Ore Treatment 

At the verj least they should state their problems to the Minerals Separation Company and 
L"'i advice as to whether or no! the flotation process offers any possibilities in the treatment of 
their ore. 

The Flotation Process 

As Invented, Perfected and Owned by 


has been successful practically everywhere installed, and millions of tons of ore are now being 
annually treated thereby. 

This is the Only Process which has no Slime Limit 

This process, with its attendant apparatus, is covered by no less than fifteen separate patents 
granted by the United States, and also by Mexico and Canada. 

The Minerals Separation, Ltd., also own the Potter and De Bavay patents for the whole of 
the world, besides many other patents. 

Mine owners, metallurgists and others interested in preventing mineral losses ami reducing 
th st of treatment are invited to semi their inquiries 


Minerals Separation American Syndicate (1913), Ltd. 

Sole Agents: Messrs. Beer, Sondheimer & Co., 42 Broadway, New York. 
Chief Engineer: E. H. Nutter, Merchants Exchange Bldg., San Francisco. 

NOTE. Notice is hereby given that no one except our Chief Engineer and the Agents named 

above is authorized to act for or represent the Minerals Separation, Ltd., or to introduce their proc- 
esses or apparatus into the United States, Canada and Mexico. 



January 3, 1914 



AS a Man is Known by His 
Friends, so is a manufactur- 
ing company known by its custom- 
ers. Q Allis-Chalmers enjoys the 
confidence and friendship of many 
mining companies and of individual 
mining men, and our relations have 
been mutually pleasant and satisfac- 
tory. To these friends and custom- 
ers we extend the Season's greetings 
and solicit your patronage in the 
new year. Q At this time of retro- 
spect and of looking ahead, may we 
suggest that these friendships will 
be strengthened, that we shall en- 
deavor to do even better for our 
customers than we have in the past, 
and that our product will be im- 
proved upon where possible. 
Owing to improvements recently 
made in our shop equipment, we 
are in position today to give 
improved service. 

Manufacturing Company 

Mining Machinery Department 

Milwaukee, Wis., U. S. A. 

( tfflces in all leading cltlus. 

I'M I 


Part of a 5000 loo order 
Di»o« ler» »ary from 52 in. to 
102 id. Metal l'i in. thick 



having works al South San Francisco and also in Sac- 
ramento. We buill tlie two 4800-ft. syphons, carrying 
1100 foot head for the La Orange Gold Mining 

The la rgest pipe ever made on this Coast was made 
by us f .r the Pacific Has & Electric Co. We turned out 
5000 tons of this gigantic pipe within the promised time. 
Our shop can work 24 hours a day. 

We can save you time and money on any pipe line. 
We have a fund of valuable experience to command ade- 
quate facilities of the latest design. 

Our specialty in the South San Francisco plant is 
high pressure riveted steel pipe. At both factories we 
manufacture oil storage, cyanide and pressure tanks, gas 
holders, oil heaters, b lilers, well casing, irrigating, air 
and light sheet-iron pipe. 1'ut your pipe line problems 
up to us. We can and will deliver the goods. 


356 Market Street, San Francisco 

Oar South San Francisco Factor; 

A Traiotoad of Oar Pipe id Foreground 

217 J Street, Sacramento 



January 3. 1914 

Robins-Messiter Ore Bedding System 

The Rnbins-Messiter Ore Bedding Systems have proved highly satisfac- 
tory at the several plants where they are in use. 

Belt conveyors mounted over the beds deliver the ore so that the piles 
are uniform in composition and physical character throughout their length. 
When reclaimed, the various sections of the face of the bed are thoroughly 
mixed by the reclaiming machine, shown in the cuts, insuring a charge of 
practically the same composition being delivered to the furnaces continuously. 

Write for our Bulletins with further information about 
ore handling, bedding and reclaiming systems. 

Robins Conveying Belt Company 

General Office, 13 Park Row, New York City 

i Mcavo 
Old I olonj Building 

lie, Washington 
i | on Works 

Pan Francisco 
Thf* •Griffin ■ Company 

Alaska Cumin rcial UuiMing 

Toronto, Ontario 
Gutta Percl » & Rubber Limited 

salt Lake Cits Office 
Walkrr Bank Budding 

NVw Q] 'BgOW, N. S. 
Tlif t rmwi Miirhii)'- (' puny, Lt<l. 

I'M I 

MINI.V. WD m 11 \l [| It I'KI SS 

Holed Through! 

On December 11. the Mount Royal Tunnel, at Montreal, 3\ miles long, was holed 
through, after 1ft months' constant work. 

Sulllviin " I'll J." 3H in I'nlli on Drill Carriage in Mount Royal Tunnel. 

A world's record for hard rock tunneling was set in this work, last May, when 810 
feet of single heading were driven in 31 working days, with 

Sullivan Water Drills 

Since May, more than 6000 feet of tunnel have heen driven, in two headings, or an 
average advance of 480 feet per heading per month. 

Sullivan Rock Drills have been used exclusively during all of this work. Their unusual 
speed and freedom from drill troubles, coupled with efficient organization and scientific 
planning, are responsible for this remarkable tunnel performance. 

A report on the Mount Roval Tunnel will be given in Mine and Quarry, for January, 
(No. 1327) Ask for it. 

You can a/ways depend on Sullivan Rock Drills, or Sullivan Hammer Drills, or Air 
Compressors, or Hoists, or Diamond Core Drills, to accomplish maximum results. 


461 Market St., San Francisco 


■ n 


Cobalt. Ont. 

i ten ver 
El Paso 


Mon t r i ' i 


New \ •". k 

Sail Lake 


St. Louis 
St, Petersburg 
Sydney, N.S.W. 


Tfie OliverTflter 

The Standard Filter for Cyanide Plants 

Correct in Design Rugged in Construction 
Efficient in Operation Automatic 

Protected by Moore Process Patents and Oliver Apparatus Patents 

Manufactured Exclusively by the 

Oliver Continuous Tilter Co. 

Hooker & Lent Building 

San Francisco, - California 

Agents far 

The Moore Filter Company 

New York 

Jamurt .;. 1914 


Progress in Metallurgy: 

Dorr Thickeners in Concentration 

20,000,000 Gallons of Water and 2,000 Tons of Slow Settling Slime 

will pn>s diiih through the l>orr Thickeners now being installed bj the Anaconda Copper Mining Com- 
pany, »ftt-r an exhaustive leriei of ti 

Regrinding in Closed Circuit 

with Dorr Classifiers Requires No Pumps or Elevators 


Arrangement of Dorr Classifiers and Tube .Mills now in operation al the Tonopafa Belmont Mill. 
The sand is washed into the Tube Mill by a jet of solution which dilutes it to a pulp of 40% moisture. 

Continuous Countercurrent Decantation 

By Means of Dorr Thickeners 

has been installed in 1913 by the Gold Road Mines Company. Kingman, Arizona j Tom Reed Mines Com- 
pany, Oatman. Arizona; Globe & Phoenix Mining Company, Rhodesia; Porcupine Crown Mines, Ltd.. 
Porcupine, Ontario ; Liberty Bell Gold Mining < Company, Telluride ( in concentrate treatment) ; and others. 
This system might be equally as profitable for you. 

The Dorr Agitator 

The rapid introduction of the DORR AGITATOR during 1913 is easily understood by practical 
mill men, who appreciate the need of reliability, the avoiding of centrifugal pumps or other wearing 
parts, low power and keeping all the pulp in suspension all the time. 

Among well known companies using or installing Dorr Agitators, in most cases after experience 
with others, are: 

BUCK HORN MINKS CO., Ilurkhorn, Nevada. 
dominion REDUCTION CO., Cobalt. Ontario. 
CIA. MIX. LA I.ICHA. EI Oro, Mexico. 

NEVADA Mll.l.N MINING CO., Inlnl™. Nevada. 

BUFFALO MINES, LIMITED. Cobalt, Ontario Ion - 

LIBERTY BELL GOLD MINING I'll,. Trlluridp, Colorado. 
TONOPAH MINING CO.. Miller.. Nevada. 

Acid Proof Dorr Machinery 

Can Now be Obtained 

One well known mill in Montana has replaced tanks with Dorr Classifiers for leaching oxidized 
copper ores with sulphuric acid, and gets higher extraction with less acid consumption. 

Send for our catalogue and full data. 

The Dorr Cyanide Machinery Company 

o.„, Dc"r £ "KSftaM 73S First National Bank Building, Denver, Colo., U. S. A. ,„-,„„ ^.w^,^,. »,;.. 


Grothe & Carter, Mexico city, General Agents for Mexico. N. Guthrldge, Ltd., Sydney, General Agent for Australia. 

The Dorr Cyanide Machinery Co., 17 Mouth Street, London, England. 



January 3, 1914 



Cable Address : London : 

Halhardlng, Ne» rork 563 Salisbury House 

Local Sales Agents 
Denver, Colo. Hendrle A BolthoM Mlg. & Supply Co. Salt Lake City. Utah-Mine & Smelter Supply Co. 

IF this is the first issue of the Milling ind Scientific Press thai you have seen, you have missed a lot in 
the past six months. Below are .just a tew of tile leading articles that we printed in the second 
volume of }918j 

HSSiNc iSoaaSSSt press 


Lead Salts in Cyanidation 

Persistence of Ore Deposits in Depth 

n, Bnui v. wi.„- 

Geology ol the Kalgoorlie Goldlield— 1 (The Human Side of Milling 




mininctantjScTenIIIil FKtSS 

Prospecting Conditions in Pem The Rand Banket r^'Pnurizing Silver Ores at Cobalt 'Operation ol the West End Mill, Tonopah 



Primary and Secondary Ores Considered With Especial Reference 
to the Gel and the Rich Heavy Metal Ores 

The Sinking and Lining of Shafts 

Plans of the Alaska Juneau Gold Mining Company 


Devetopmen. ol Converter Practice 

By Hi""* 1U " 


M-'og Problems « Mining 0,^, 

m the Ceeur d'Afcae-l 


Solution Control in Cyanidation 



Waste Heat Boilers in Reverberatory Furnace Flues 


Smelting Practice in the Southwest 

ll> T«o 


Common Sense of the Fume Question 

We print two volumes^ year, over 2000 pages of reading matter, including in addition to such 
articles as indicated above Full news of the world's great metal mining districts, market news. 
editorials, discussions, and many special features. 

The Mining ana * is is -the oldest and best American mining journal. It is the one for 
which the leading engineens write, and the i that all mining men read. 

Subscription Price, S3 per year (add $1 lor Canada, $2 lor foreign postage). 




Engineering Books 

During the year just past our Book Department lias tome into its 
own. Our stock of Engineering Hooks is now generally recognized to 
be the largest and most representative west of Chicago. 

To those of you who have discovered that we do actually carry the 
books in stock, we desire to express our appreciation of your orders; 
and to those who are still sending Kast, or letting some book broker 
"order it for you," we ask an opportunity to fill your next order. 

Mining and Metallurgical Books 

We publish or are exclusive agents for the following Mining and 
Metallurgical Books. If you desire more detailed information about 
any of them, write to us: 

Mining Engineers' Examination and Report 
Book. By Charles Janin. In two parts. 
Leather $2.50 

Cyanide Practice, 1910-1913. Edited by ML W. 
vim Bernewitz. 732 pages. Cloth.'. . .$3.00 

Oil Production Methods. By Paul M. Paine 
and B. K. Stroud. 240 pages. Cloth.. $3.00 

Concentrating Ores by Flotation. By T. J. 
Hobver. 221 pages. Cloth '...$3.75 

Metallurgy of the Common Metals. By L. S. 
Austin. 531 pages. Cloth '..$4.00 

Mining Law. By II. W. MacParren. 355 pages. 
Leather $2.00 

Mine Sampling and Valuation. By C. 8. Herzig. 
i In Press. 

Hints on Amalgamation. By W. J. Adams. 
120 pages. Leather .' $2.00 

Fire Assays. By L. s. Austin. !il pages. " $1.00 

De Re Metallica. By Georgius Agricola. 
Translated by II. 0. and Lou II. Eoover. 

637 pages. Vellum $8.00 

Assaying. By G. H. 'Aaron. Parti. 139 pages! 

Cloth . . .' $1.00 

Part II and III. 162 page's. < 'loth .. .$1.50 

Cyanide Practice in Mexico. By Ferdinand 
McCann. 199 pages. Cloth. . .' $2.00 

Graphical Solution of Fault Problems. By ( '. F. 
Tolman. 43 pages. Limp Leather. . .$1.00 

Practical Stamp Milling and Amalgamation. 
By II. W. MacFarren. (Third Edition in 


Testing for Metallurgical Processes. By -I. A. 
Barr. 216 pages. Cloth ..$2.00 

A Guide to Technical Writing. By T. A. 
Rickard. 174 pages. Cloth $1.00 

West Australian Mining Practice. By K. D. 
Cleland. 268 pages. Cloth $8.00 



420 Market Street San Francisco 



January 3. 1914 

§ti£j if ie&PZ>> 9\ldxx$ur$ \0y and ^09^> fe^ 


RATES i One-hair Inch, 92 S per year f48 cents per week). Combination rate with THE MINING MAGAZINE of London 
one-halt Inch In each, $40 per year (77 cents per week). Subscription included. 


A It I /ON A. 

Blauvelt. Harrington. 
Burch. H. Kenyon. 
Collins. Edgar A. 
DeKalk. Courtenay. 
Smith & Zelsemer. 
Ten Oever. Uneko. 


Abbott. James W. 
Addlton, A. Sydney. 
Alsdorf, F. C. 
Arnold, Ralph. 
Bain, H. Foster. 
Beatson. A. K. 
Benjamin, Edward H. 
Bradley. Fred W. 
Burch, Albert 
Burch. Caetani & 

Caetani. Gelasto. 
Carpenter, Alvin B. 
Clark, Baylies C. 
Clark. C. C. 
Cleven ger, G. Howell. 
Colbath. James S. 
Cox & Juessen. 
Cranston. Robert E. 
Dennis, Clifford G. 
Eye. Clyde M. 
Fotsom. D. M. 
Free. E. E. 
Grunsky, C. E., Jr. 
Hartley, J. H. 
Harvey, F. H. 
Hellmann. Frederick. 
HerBhey. Oscar H. 
Hoffmann, Ross B. 
Holland. L. F. S. 
Hubbard & Spiers. 
Hunt & Co., Kobt. W. 
Huston, H. L. 
Innes. Murray. 
Jantn. Charles. 
Johnson, Harry R. 
Juessen. Edmund. 
Kerr. Mark B. 
Lanagan, W. H. 
Leslie. Eugene H. 

McLaughlin. R. P. 
Merrill. Charles W. 
Merrill Metallurgical Co. 
Merrill, Frederick J. H. 
Morris, F. L. 
Mudd. Seeley W. 
Munro. C. H. 
Myers, Desalx B. 
Nelll, James W. 
Newman, M. A. 
Noyes, William S. 
Osmont, Vance C. 
Pollak Co.. The A. J. 
Prlchard. W. A. 
Probert .Frank H. 
Radford, William H. 
Ratnsford, R. S. 
Read, Thomas T. 
Ross. G. McM. 
Ross. John. Jr. 
Royer. Frank W. 
Scott. Robert. 
SImonds, Ernebt H. 
Slzer. F. L. 
Smith. Howard D. 
Stebblns, Elwyn W. 
Storms. William H. 
Thomas. E. G. 
Tolman, Cyrus Fisher. Jr 
Turner. H. W. 
von Bernewitz. M. W. 
Wartenweller, Otto 

& Co. 
Welch. R. Kemp. 
Wiseman. Philip. 
Wolf. J. H. G. 


Allen & Colburn. 
Argall & Sons. Philip. 
Bancroft. Howard. 
Chase. Charles A. 
Collins. George E. 
Dorr, John V. N. 
Draper & Gross. 
Fairchlld. O. H. 
Farish. John B. 
Finch. John Wellington. 
Griffith & Co.. T. R. 
Hale, Alfred H. 

Hills & Willis. 
Reld. Walter L. 
Revett, Ben Stanley. 
Rlckard. Forbes. 
Timmons, Colin. 
Toll. Rensselaer H. 
Warwick, A. W. 
Worcester. S. A. 


Anderson & Son. G. 

Easton. Stanly A. 
Edwards. R. L. 
Livingston & Stewart. 

Hollis. H. L. 

Hunt & Co.. Robert W. 


Stanford. Richard B. 


Dlckerman. Alton L. 
Richards, Robert H. 
Rogers, Allen Hastings. 
Wenstrom. Olof. 


Dlckerman, Alton L. 
Dunster, Carl B. 


Bowman. Frank A. 
Collins, Edwin James. 
Wlnchell, Horace V. 


Hall, R. G. 
Kirby. Edmund B. 
Malcolmson. Jas. W. 


Creden, William L. 
Greene. Fred T. 


Cutler, H. C. 
Kdsall. Burroughs. 
Kerguson. Donald. 
Lakenan, C. B. 
Symmes. Whitman. 


Aldrldge, Walter H. 
Armstead. Henry Howell 
Ball. Sydney H. 
Beatty. A. Chester. 
Benedict, Wm. de L. 
Brodle. Walter M. 
Candlan Mining & Ex- 
ploration Co., Ltd. 
Channlng. J. Parke. 
Cox. W. Rowland. 
Cranston, Robert E. 
Doveton, Godfrey D. 
Dufourcq, Edward L. 
Dwight. Arthur S. 
Erdlets, J. F. B.. Jr. 
Eveland. A. J. 
Farish, John B. 
Fearn, Percy L. 
Finch. John Wellington. 
Pinlay. J. R. 
Garrey. George H. 
Hamilton. E. M. 
Hawxhurst. Robert, Jr. 
Henderson, H. P. 
Hendryx. Wilbur A. 
Hunt & Co.. Robert W. 
Leggett. Thos. H. 
Llndberg. Carl O. 
Lloyd. R. L. 
McCune, Raymond. 
Mercer. John W. 
Minard. Frederick H. 
Mines Management Co. 
Olcott & Corning. 
Pearse, Kingston & 

Perry. O. B. 
Poillon & Polrler. 
Pomeroy. Wm. A. 
Raymond, Rosslter W. 
Rlcketts & Banks. 
Riordan, D. M. 
Rogers, Allen Hastings. 
Rogers. Edwin M. 
Sharpless. Fred'k F. 
SImonds &. Burns. 

Spilsbury. E. Gybbon 
Sussman. Otto. 
Thomas. E. G, 
Thomas. Kirby. 
Von Rosenberg. Leo. 
Webber. Morton. 
Westervelt. William 

Yeatman. Pope. 


Miller. Bernard P. 
Spaulding. C. F. 


Ayres. W. S. 
Chance, H. M. 
Clapp. Frederick G. 
DuBois. Mixer & Armas. 
Garrison, F. Lynwood. 
Goodale, Stephen L, 
Jandorf, M. L. 
Myers, Desalx B. 
Quenea, A. L. 
Spurr, J. Edward. 


Hanlon, Russell Yale. 
Wllmot. H. C. 

Bradley, D. H.. Jr. 
Kinnon. Wm. H. 
Wright, Louis A. 


DuBois, Mixer & Armas. 
Jennings, E. P. 
Johnson, M. M. 
Kirk & Leavell, 
Krumb. Henry. 
McKlm. J. W. 
Nelll. James W. 
Sears, Stanley C. 
Wlnwood. Job H. 


("Mark. V V. ' 
Clarke. Roy H. 



BosquI, Francis L. 
Bristol, J. J. 
Broadbrldge, W. 
Dixon, Clement. 
Rotherham. G. H. 


Beadon. W. R. Coleridge. 

Cole. F. L. 

Dickson. A. A. C. 

Drucker, A. E. 

Macnutt. C. H. 

Smith. Reuben Edward. 

Vallentine. E. J. 


Bellinger. H. C. 
Grace. William Frank. 
Smith. J. D. Audley. 


Brewer. Wm. M. 
Brown, H .B. 
Brown & Butters. 
Canadian Mining & Ex- 
ploration Co., Ltd 
Ferrier. W. F. 

Fowler, Samuel S. 
Hardman, John E. 
Keffer, Frederic. 
Kirby. A. G. 
Lamb. R. B. 
Levy, Ernest. 
Loring, Frank C. 
Tyrrell. J. B. 


Hartley. J. H. 
Marsters. V. F. 

Kl IUH'K. 

Aekerman. Audley H. 

Alexander Hill & 

Andre Griffiths. Mann- 
helm & Co. 

Arnold. Ralph. 

Bach. William. 

Balnbrldge, Seymour 
& Co. 

Bavldon, H. C. 

Reatty. A. Chester 

Botsford. Robert S. 

Bray. Francis P. 

Broadbrldge, W. 
Brown, R. Gllm&n. 
Chaplin, George P. 
Collins, Henry F. 
Curie. J. H. 

DuBois. Mixer & Armas. 
Erdlets. J. F. B.. Jr. 
Fennell. John Haw.ord. 
Fraser. Colin. 
Geppert, R. M. 
Henderson. J. A. Leo. 
Herzig. Charles S. 
Holloway. Geo. T. & Co.. 

Homersham. E. C. 
Hoover. H. C. 
Hoover. Theodore J. 
Hunt, Bertram. 
Hutchins. J. P. 
Inder & Henderson. 
Inskipp & Bevan. 
Jones. Henry Ewer. 
Ivuehn, A. F. 
Loring. E. A. 
Loring. W. J. 
Merrlcks. Crane & Co. 
Michell. George V. 

Mines Management Co. 
Nichols, Horace G. 
Pawle & Brellch. 
Payne & Co.. F. W. 
Pearse, Kingston & 

Perkins. Walter G., & Co. 
Prlsk. Thomas H. 
Purington. Chester W. 
Queneau, A.' L. 
Rlckard. Edgar. 
Rlckard, T. A. 
Romer. B. F. P. 
Stines. Norman C. 
Stockfeld. G. A. 
Teale. J. W. 
Thomas, E. G. 
Thome, W, E. 
Thurston. E. C. 
Tltcomb. H. A 
Turner. H. W. 
Turner, Scott. 
Weatherbe. D'Arcy. 
Wright. Charles Will. 

Armstead. Henry Howell 
Ral>h. Pprey Andrus. 

Caldwell, Forest B. 
Grothe & Carter. 
Helm. J. D. 
Hoyle, Charles. 
Mines Management Co. 
Nahl. Arthur C. 
Oldtleld, Frank W. 
Paul, W. H. 
Raymond, Robert M. 
Royer. Frank W. 
Shaw, S. F. 
Simpson. W. E. 
Stevens. Blarney. 
Tweedy. Geo. A. 
Warwick. A. W. 


Chede & Davidson. 
Couldrey. Paul S. 
Gamba, F. Perelra. 
Hellmann, Frederick. 
Jenks. Arthur W. 
Lamb, Mark B. 
Lewis. H. Allman. 
McCune. Raymond. 
Strauss. Lester W. 

I'M I 


<$> ro |? oss i o i > ci P *£) j roc Yo v\y> 

ABBOTT. James W„ 

Mlaln« Kaslarrr. 
HoJIonbOO-k BotoL I,,.* Aim. | 

ACKERMAN. Audley H., 

»1 I i.l n*. KMKlurrr. 

Care British South African Comp 
3, London Wall BulMlngn, London, KLC 

Cubit- : Consulting. Usual Codes 

ADDITON. A. Sydney, 

Mff nil iir,; I. ul Knilnrrr. 

Cyanl.l.- Mill ami Plant Construction. 

318 st . San Pranclaco. 

ALDRIDGE, Walter H., 

Mining nod Mrtallurgl-i jiI Knglnrrr. 

Care of Wm. B. Thompson. 

14 WhII St New York, 


Consulting Knuhurr* mill Met nllurglsts. 
4 Broad St. Place. London. E.C. 





ai Bdc Denver. 


Mining EnglniM-r. 

Merchants' Exchange. San Francisco. 
Code: Bedford McNeill. 

ANDERSON & SON, G. Scott, 

Consulting Mining EoKlnern. 

Wallace. Idaho. 
Coeur d'Alene Mines. 

Code: Bedford McNeill 



Mining Engineers. 

Salisbury House. London. Cable: Nodule. 

ARGALL & SONS, Philip, 

Mining and Metallurgical Engine-era. 

First National Bank Bids.. Denver. 
Cable: Argall. Code: Bedford McNeill. 

ARMSTEAD, Henry Howell, 

ron«nltloK Mining Engineer. 

29 Broadway, New York. 

Apartado 65. Guanajuato. Mexico. 

ARNOLD, Ralph, Cable: Ralfarnoll. 

Geologist and Petroleum Knulncor. 

Union Oil Bdg., Los Angeles, Cal. 

115 Broadway, New York. 

No. 1. London Wall Bdgs., London. E.C. 

AYRES, W. S., 

Mining and Mechanical Engineer. 

Hazleton. Pa. 
Consultation, Exam.. Reports. Many 
years' exp. as Mgr. Iron and Coal Mines. 

BABB, Percy Andnis, 

Mining unit Metallurgical KnKlneer. 
Edilicla La Cla Bancaria, Mexico, D. F. 

Avenlda 5 De Mayo No. 32. 
Cable: Pros-nine. Code: Bed. McNeill. 

EACH, William, 

Placer Engineer. 

Glyngarth. Beechwood Rd.. 
Sanderstead. Surrey, England. 

Code: McNeill. 1908 


kilning l-nuliirrr. 

i'.? RallahuTjr House I Inn. Rf 

BALL, Sydney H., 

SI I ill ug «. co Intel"!. 

71 Bromdwny. New ifoi k 
Bydhiill, Code Bedford McNeill 

EANCROFT, Howland, 

ClMlhllillK HlllluU <-«'4>l<)g|Mf. 

Butte 780 Bymee Building. 

IVnver. Colorado. 

CaMi-; iinwiuu). Code: Bedford McNeill. 


kilning lOoulnccr. 

Fort. No. i, Rirdarenaky Obla-at 

BEADON, W. R. Coleridge, 

Mlnlnu Enulnccr. 
Post Box 231. Rangoon. Burma. India 
Cable: Mentor, Rangoon 
Codes: McNeill's M908l; A, B. C. T>th Ed. 


Mining Engineer. 

Formerly manuger Big Bend, Cal. 

Later at L*atouche, Alaska. 

220 Central Bank Bdg.. Oakland. Cal, 

BEATTY, A. Chester, 

Connaltlng Mining Engineer. 

71 Brouaway. New York. 
No. 1 London Wall Bdgs., London, E.C. 
Cable: Granitic- Code: Bedford McNeill. 


Metallurgical Elglncers. 

General Manager 

Great Cooar Limited. 

Cooar. N. S. W. 

BENEDICT, William de L., 

Mining Knglneer. 

19 Cedar at.. New York. 

BENJAMIN, Edward H., 

Consulting mining Engineer. 

805 Linden street, Oakland, Cal. 

BLAUVELT, Harrington, 

Mining Engineer and Metallurgist. 

Prescott, Arizona. 
Mines examined and reported upon. 

BOSQUI. Francis L., 

< nn.ulllnc 3-Ietallar*~fl.t. 

Rand Mines, Ltd.. 

Johannesburg, Transvaal. 

Cable: Franbo. Code: Bed. McNeill, 1908 

BOTSFORD, Robert S., 

Mining Engineer. 

Nicolo-Pavda Mg. Dist. Co., Pavda 

Estate, Vyla Station. Bogoslovsk. R, T., 

Government of Perm, Russia. 

BOWMAN, Frank A., 

Mining Engineer. 

Plans, Surveys, Reports, Management. 
Gilbert, Minn. 

BAIN, H. Foster, 

Mlnlns i;ri.tiiiil.i 

Editor Minlnit and Sclenlinc 

.s.. prorata .11 v , 



Ill - IiiiuIi-mI KHKl.rrr. 

ill) Mln na .v UllTlna ■ 
linn 1700 llnminiil Bl III 

BJkADLEY, Fred W., 

MIiiIiik t:ni:lMr.-r. 

.■'k.T Hull. III. k ^iin I .... 
"""ill Cod. II-. II M. .Will 

BRAY, Francis P., 

Ml 1,1 1,1: 

103 Elgin Avenue, Maids I'll.- 
I.iinilnn. w 
Cabin: Patrlulus London 

Coil,.: Hi ....... I, , II . i 



Mining Knclnrrr nml 



P. O. Box 701 
Cable: Brewer. C 





I: •• 
il M. N 



Mining I'.nulDrrr. 

AbbontlakOOH Mine, Taquah 

Gold Coast Colony. West AfrlCi 


Mining KnKlucrr. 

62 London Wall Londoi-. E.C. 
Tarkwa, Gold Coast Colony 
Cable: Rlllaiope i aual Coi 


BRODIE, Walter M., 

Mining engineer and MetnllurglMt. 

Care Batopllas Mining Co.. 
45 Broadway, New York. 

BROWN, H. B., m.e., 

British Columhla Mines Bought. Sold 
and Operated. 
725 Pacific Block, Vancouver. B C 
Hedley, B. C. 

BROWN, R. Gilman, k.m.. 

Consulting* Eniclnrrr. 

62. London Wall. London. E.C. 
Cable: Argely London. Usual Codes 


Mining, Metallurgy and Mining 

Prince Rupert. B. C, Canada. 

Burch. Caetanl & Hershey. 

BURCH, Albert, 

Consulting Elglneer. 

Crocker Bdg.. San Francisco. 
Cable: Burch. Usual Codes 

BURCH, H. Kenyon, 

Mecbanlenl and Metallurgical Engtnler. 

Care Inspiration Consolidated 
Copper Co., 
Miami. Gila County, Arizona. 

Burch, Caetanl & Hershey. 

CAETANI, Gelasio, 

Consulting Engineer. 

Crocker Bdg., San Francisco. 
Cable: Caetanl. Usual Codes. 

CALDWELL, Forest B„ 

Mining Engl neer. 

Supt. The Candelarla Land, Mining <fc 
Power Co., Ltd., San Dlmas, Dgo., Mex 
Cable: Candelarla. Code: Bed. McNeill 


Mining Engineer. 
California Bdg., Los Angeles, Cal. 



Januarv 3. 1914 

$> rc jioss ioncir^pi mc h>ry- 






»nd Prosp* 


' kM I 

41 ITllbaall Place. New Tork City. 
Cnnidlan Otnces: 
Trader* Bank RJg. Toronto. Ontario- 
Drake Block. Victoria. B. C 

COLE, F L.. 

Mtalac Kaelaei-r. 

eable. Hat CO- 

COLLINS. Edgar A. 

Mlainc K»stBwr. 


CoDsQlltnc M (aia£ EnclDtrr. 

ap St.. Boston. Mass. 
Temporary address: Houghton. Mich. 






bIdc Eaglaeer. 




rr.a. E. 1 

■■■ sda- 

tad - 



Caaaaltlas Mlalac EKiaerr. 
13- Dr*xel BJs -. Pblla 

COLLINS. Edwin James. 

Miaiac EaaraaecT. 

Mine Examinations and Management- 
1««S-1U05 Terrey Bdg.. Dululh. Minn. 

DIXON. Clement. 

Miaiac Eajclaeer. 

P. O. Box 305. Bulawayo. Rhodesia 

Cable xon. Usual Codes. 


I *m»»lcl»c luaslaet-r- 
*; Broadway. New Tork. 

COLLINS. George E.. 

Miaiac Katlifrr. 
Hire icd Management 

D Bdg.. Der 
Calbe: Colcoroac 

DORR. John V. N., 

Mrtallaixical Eapriae*r. 

fj: ■- .nidation. 

733-734 First Nafl Bar.k Bdg.. Denver. 
Cable: Dorr. Code: Bed McN. Wee 

CHAPLIN. George P.. 

Mlalkc » ici»«r 

COLLINS. Henry F.. 

Miaiac Kacta<-rr. 

Huelva Copper A Sulphur Co.. Ltd.. 

Valdelamusa. Pror. c -pain. 

Cable: Huelvacop. Code: BroomhalL 

DOVETON. Godfrey D., 

;.ix. » 

Mrtalloriricat Eajriarer. 
Specialist in v :■_..; 

1*5 Broadway. New York 

CEASE. Charles A_ 

Sialic K.t1«err. 
Hat- Bank Bdg. Denver 
Ubarrtv Bell G M Cc Telluride. Colo. 


Gen - - 


Paul S. 

ac Eaaclaa 
de Pasco 


le Ptaea 


H B- 


Marshall D. Draper. John Gross. 
Xlalac lad Melallanclral Eaciarera. 

Code: Bedford M 


t •Haltlax Mlaias Eagtaeen. 

ExamtaaUoas and Reports. 

esentation and Management 

Foreign Companies. 


?.ep. of Columbia. Sooth America. 

Cable: Ctedavt. 

Codes Bed. McNeill. Lieber. A.B C 


COX. W. Rowland, and Staff, 

i on* til tine >per iallala. 

3 Examina- 
of Mines and Mills. 
1S3 Broadway. New Tork. 


Thomas Cox. 

Miaiac aid Mnallorciial Caclarrn. 
M« Meet- Bd*, 

DRDCKER. A. E., ji.i .ji.m.cjU: 

(>o«uliiDc Mrtalland-I. 
Te<h .- ran- 

caise ? (via 

Us saw*. Korea. CaM- 

Dubois, mixer i armas. 

1*2 Ha 


ialt Lake City. 

CLAPP. Frederick G„ 

.-<• ,.«: 

Raaj rO m 

*J] Fonrth At? 

■I^tkal tMia^™- 

CRANSTON, Robert E„ 

Mlalac Eaciaerr- 
I Mbrook Bdg.. San Francisco. 
Room 14#« New Tork. 

Cable Rec-_ McNeill. IMS. 

DUFOURCQ. Edward L.. 

Mlninc Bmlyir. 

Room . 11-1 Exch. Annex. 

N?w Tork. 
Cable: DuJourco. Code: McNeill 


Mlalai aaa Mectaaalral Eaaria 

CREDEN. William L.. 

Coaialiiac Sialic Cacla<-<r. 

:io*j and Management. 
First National Bank Building. 

r_::r M:r-.s->. 

DUNSTEB, Carl B . 

liaise EiciDFt-r. 


-_ - ' ' - . : " - 

?.KE Rov H 

Mnlt£ E«cl»«-r. 

OM National Buk B-: 



■ lae 


c: London 


1 : - i : - 

DWIGHT. Arthur S.. 

Millie Eaclarrr aad Mn.ll.rcl.l. 
'-"ew Tork- 
3 .. Me 5 r:-rr: 

:: ^f ? - i v ;■ . - - - f ... - 









Box a: 




- " - ' " 


Manager 6 

Stanly A.. 

Mlalac Kaclaerr. 


VMM M r 



Sriallairc»*-il Kvxlaerr, 
Kawtborae Ave. Pal. 

DE KALB L Courtenay, 

CaaBsaltiBc - Pacific Smelting 



EDSALL. Puiltnig l u 

Mialac Eairiaeer. 

COLBATH James 5 

CraaMe Process. 

aoe. L«s AageJes. CaL 

DENNIS. Clifford G 

Miaiac Kaciarrr. 

Crocker Bdg.. Ss 


isco. Cat 


Hlalac taciarrl 

January ! T'U 

MINIM. II \ III l< I'KI >s 




511 - 
C»l>le llraml. 

i * 










'nual «•• 


U« • ■!■•«. •! iiii.I l hi n.l. ;il I "tin. . ' 

Oould, Kres A Ash, Chemical Rnaineera, 

Mr>nn«ln». k M'ltT . Sun i ■•■ 

HANLON, Russell Yale, 

Mining I Hulnrrr 

Manila P i 
HomImii Colli ii. dford McNeill 


Mining KNglairr. 

■ f, Kew Torn. 

GAMBA, F. Pereira, 

I . ■ 1 1 - 1 1 I I I 1 1 1. M I II I H K I ii U t 1 1 ' ■ r 

In Soul ii-Tii Colombia 
Tuquei 1 ■■* Colombia, b h 
i Panama y Tunmro 

HARDMAN, John E., 

t ••iiiuli Iiik Mining I iik in- ■ r 

112 Si Jiimi-n : ' ■ I i 

Cable: Hardman Code B Ml ford McNeill 

EYE. Clyde M.. 

Mining tutlnrrr. 

Suj'i Impai iii Reduction ( '•• . 
> >vtlby i - ..i 




<unHulllutf Mining 





186 n 



\v Y 1 1 r k 

Hlnlaa i. 

Abnnguri'/ 1 

Ti-ti i 
2432 \V«'l)MtT St 





oata Rica. 
irkeley. Cnl. 


( mnaiilr Inu MIuIiik uml 
Mrinll uric I I'll I KitKlm-rr. 

ned, Erected 
428 Hallway Exchange Bdg,. Denvr 

GARRISON, F. Lynwood, 

Mlulni: MnKlnriT. 

Ml Drexel Bag., Philadelphia. 
Cabla: Aurum. Code Bedford McNeill. 


M 1 n 1 ii u rind Cowill lug 1 



It, California. 


Cable: Far 





>d S 


!., N. 

w York. 


MIiiIiiu l-'iiulncrr. 

Sallebury House, London, E. c. 

Code McNeill (Both Kitltlona). 

HAWXHURST, Robert, Jr., 

MIlillIU lUlltlnriT, 

r . International Hunk Ing i ' 

60 Wall St., N-u York. 

Cable: Hawxhurst care intmncor. 

FEARN, Percy L., 

MIuIiik KdkIudt. 
36 Wall st . New York. 

GOODALE, Stephen L., 

Mining KiikIiu'it. 

Professor <>f M.-tullurgv, 

University of Pittsburgh, 

Pittsburgh. Pa. 

HELLMANN, Frederick, 

Mining I niil r. 

Chuntiicnmnta, Chile. %• i n Antofai 

519 California St.. S F ■ McN. 

Cable; n.iimann. Antofagaeta. 

FENNELL, John Howard, 

M In i iit KnKloriT. 

Hi'innr. - Slough. Bucks. 

GRACE, William Frank, 

M in I ii k I ■'. n u i in- rr. 

Gen. Mgr. Walhl Grand Junction, 

Walhl, N. Z. 

Cable: (.rn^efully Usual Cmlfs 

HELM, J. D., 

Milling I "^ ' r 

Apartado 1277, Mexico. D. F. 

FERGUSON, Donald, 

t ..u-tiiiiuu Mining Basfnvi'i. 
Cable: hVrg. Box til, Qoldfleld, Nev 

Codea: Morelng& Neal; Bedford McNeill 

GREENE, Fred T., 

Mining Kucini'iT and Geologbit. 

401-2-3 State Savings Bank Bdg.. 
Butte. Montana. 






66 Broadw 


New York. 


Mlnlnic Englnrer iind GrnloglNt. 

204 Lumsden Bdg., Toronto. Ont. 

Genera] Manager, Natural Resources 

Exploration Co.. Ltd. 


« on-iriui inn. Metallurgical nnd 

Consulting BnRlnrcrH, 

416-417 Central Savings Bank Bdg.. 

Denver. Colo. 


Mining Engineer nnd (ceolngUt. 

Worcester House. Walhrook 

London, EC. 

Cable: Oleosophv. Code: Bed. McNeill. 

FINCH, John Wellington, 

Geologist nnd Engineer of Mines. 

71 Broadwav, New York. 
730 Symes Bdg.. Denver. 




Patented System of Pulp Agitation. 

Latest Improvements. 
2a San Agustln 53. P. O. Box 2554. 
Mexico, D. F. 

HENDRYX, Wibur A., 


V.P. and Gen. Mgr. Hendry x Cyanide 
Machy. Co., 107-109 William St.. N. Y. 
Cable: Henelecy. ___ 



Room 802. 6 


2 William 


GRUNSKY, C. E., Jr., 

Mining I jml in- <t. 

American Engineering Corporation. 

57 Post St.. San Francisco. 

Burch, Caetani & Hershey. 

HERSHEY, Oscar H.. 

Coniia'tlng Mining Goologliit. 

Kellogg, Idaho. 
Cable: Hershey. Code: Bedford McNeill. 


Mining Engineer. 

Stanford University. California 

HALE, Alfred H., 

Ml nine Enelnerr. 

Vanadium and Uranium. 
Room 24, 1643 Champa St., Denver, Colo. 
Code: Western Union. 

HERZIG, Charles S., 

Mining Engineer. 

Salisbury House, London. 
Cable: Herzlg. 


FOWLER, Samuel S., 

Mining Engineer nnd Metallurgist. 

Nelson, British Columbia. 
Cable: Fowler. Usual codes. 


R. G., 


rglcol nail 


Knicl fii-.-r. 

Gen. Mg 

r. Unlli.l 


& Ch 

. Mo. 




Victor G. Hills. Frank G. Willis. 

Mining Rnglneem. 

Cripple Creek. 318 McPhee Bdg., Denver. 
Cable: Hlllwlll. Usual Codes. 

FRASER, Colin, 

Mining Geoloelnt. 

c/o Bank of New Zealand. 
1 Queen Victoria St.. London. E.C. 



Specialty: Cyanldlng Gold and Silver 

Room 1883. 50 Church St.. New York. 


Mining: Engineer. 

First Nat. Bank Bdg., Oakland, CaL 
Cable: Rosshof. 



January 3. 1914 

$>ro$&$s\o mrt ^irsc tory- 


M Ininu Cnuliii'cr and Metallurgist. 

Examinations and Reports. 

601 H. W. Hellman Bdg.. 

Lob Angelas, Cal. 

Dudley J. Insktpp. John A. Bevan. 


MlnJnu Engineers. 

. Brnad St Place. London E.C. 

Cable: hfonaxlfe Usual Codes 

KRUMB, Henry, 

Vilnius KnKfnppr. 

Felt Bdg.. Salt Lake City. Utah. 


Consulting Mining Eoglnrfr 

and Metallurgist. 

HIT First National Bank Bdg., Chicago. 


I'rm-I li-n I Mineralogist. 

Houston, Pa. 
Home Address: York. Pa. 

KUEHN, A. F., 

Consulting Mining Englneei 

1 London Wall Buildings. 
London, E.C. 
Cable: Norlte. 

HOLLOWAY, Geo. T. & Co., Ltd. 

13 Emmett St., Llmehouse, 
London. E. 
Cable: Neolithic, London. 

Code: Bedford McNeill, 

JANLN, Charles, 

Mining Engineer. 

620 Kohl Bdg.. San Francisco. 
Cahle: Charjan Code: Bedford McNeill. 


Mining Engineer. 
Ely, Nevada, 


Mining Engineer. 

33 Broad Street Avenue, London, E.C. 
Cable: Homr-rsham. 

JENKS, Arthur W., 

Mining Engineer and Metallurgist. 

Care Banco Anglo-Sud Americano. 
Buenos Aires. Argentine Republic. 

LAMB, Mark R., 


Mgr. Allls-Chalmers Co., 
Santiago. Chile. 


Mining Engineer. 

1 London Wall Bdgs.. London, E.C. 
No professional work entertained. 
Cable: Crevooh, London. 


Mining Engineer. 
Salt Lake City. Utah. 
Cable: Chalcoclte. Salt Lake. 
Code: Bedford McNeill 

LAMB, R. B., 

Mining Engineer and Metallurgist. 

Traders Bank Bdg., 

Toronto, Ontario. Canada. 

HOOVER, Theodore J., 

Consulting Mining Engineer. 

Specialty: Flotation Concentr. Process. 

1 London Wall Bdgs., London. E.C. 
Cable: Mlldaloo. 

JOHNSON, Harry R., 

Consulting Gi-ologlnt. 

Petroleum. Water Supply. 
805 H. W. Hellman Bdg.. Los Angeles. 
Cable: Jopet Usual Codes. 


Mining Engineer. 

1057 Monadnock Bdg.. San Francis- o. 
Code: Bedford HcNellL 

HOYLE, Charles, 

Mining Engineer. 

Apartado 8. El Oro. Mexico. 


Mining Engineer. 

1008 Newhouse Building. 
Salt Lake City. Utah. 

LEGGETT, Thos. H., 

Consulting Mining Engineer. 

• 165 Broadway, New York City. 
Cable: Tomleg. 

J. D. Hubbard. James Spiers. 


Mining, Metallurgical and Mechanical 

*34 Mills Building. San Francisco. 

JONES, Henry Ewer, 

Mining Engineer. 

Parliament Mansions. Victoria St.. 

Westminster, London. S. W. 

Cahl^ Ewerones. CodeiBroomhaH's Imp 

LESLIE, Eugene H„ 

Mining Engineer. 

Asst. Editor Mining and Scientific Press. 
No professional work undertaken. 

HUNT & CO., Robert W., 


Bureau of Inspection, Teste A Consultation. 

Chlcago-#an r rauclsco-New S'ork-Pttteburg. 

San Francisco Office, 418 Montgomery St. 

St. Louis-Montreal-Lonaon. 

Consulting, Designing and Supervising en- 
gineers, inspectors of Railroad, Structural 
and other Materials and Equipment. 

(."hern leal and Physical Laboratories. 

KEFFER, Frederic, 

Mining Engineer and Geologist. 

The British Columbia Copper Co.. Ltd. 
Greenwood, B. C. 

KERR, Mark B., 

Consulting Engineer. 

626 Mills Bdg., San Francisco. Cal. 
Present Address: 

Loralne, Kern Co., Cal. 

LEVY, Ernest, 

Mining Engineer. 

Representing Alex. Hill & Stewart. 

Rossland. British Columbia. 

Cable: Truculent. Code: Bedford Mci 2111 

LEWIS, H. Allman, 

Managing Engineer. 

The Berenguela Tin Mines, Ltd., Bolivia. 

Address: care Gibbs & Co., Oruro. 
Code: McNeill (1908). 





Care E. Hunt & 
West George St.. 


KINNON, Wm. H., 

Mining Engineer and Metallurgist. 

307 San Francisco SU, 
El Paso. Texas. 

LINDBERG, Carl 0., 

(With W. Rowland Cox.) 
Mining Engineer. 

Mines Examined and Reported Upon. 
165 Broadway. New York. 


Mining Engineer. 

Mills Bdg.. San Francisco. Cat. 
Cable: Haruston. 

KIRBY, A. G., 


Mill Designing and Construction. 

Specialty: Concentration & Cvanldatlon. 

Dominion Red. Co., Cobalt. Ont. 


D. C. Livingston. C. A. Stewart. 

Mining Engineers and Geologist*. 
Examinations. Reports. Surveys, Maps. 
Moscow. Idaho. 

HUTCHINS, J. P., Mining Engineer. 

ilnatlons in Russia and Siberia. 
Oalernaya. St. Petersburg 
341 Salisbury House. London. E.C. 
CaM*: Getchlns. Po ■].-■■ W U 

KIRBY, Edmund B., 

Mining Engineer und Metallurgist. 

918 Security Bdg.. St. Louis. 

Specialty: The expert examination of 

mines ami metallurgical enterprises. 


Metallurgical Engineer. 

Specialty: Pyro Metallurgy of Copper 
and Associated Metals. Cable: Rlcloy. 
Code: Bed. McNeill. 29 Broadway. N, Y. 


f (intuiting Englneera. 

Dredging and Hydraulicking. 
70 Gracechurch St.. London, E.C. 


Consulting Engineers. 

Examination, Management, and Opera- 
tion of Mines. Design Equipment. 

Newhouse Bdg., Salt Lake City, Utah. 

Bewick, Moreing & Co. 

L0RING, E. A„ 

Mining Engineer. 

62 London Wall, London. E.C. 
Cable: Ringlo. Usual Codes. 

.1 I'll I 

\!l\l\i. \ND S< II Mil I. I'KI SS 


Frank C 

Mining ■:■■ 


- uh 

HuiMmu. Toronto, 


MILLER, Bernard P., 

Mini..* Kaglurrr. 
I!'l Sixth St. I't.nliiiKl. I 


I C K Corning i 

*!«!»■ •.<>.! Mrtnllitrnlml KnKlnrrra. 

II SI . N.-w York 






»lD| 4 ' 





MINARD, Frederick H., 

Mining tlfteHft 

Trinity Bdg., in Broadway, Naw fori 
fable: Frednard McNeil 

OLDFIELD, Frank W., 

Mining I iilIil. i 

Km loan m iti.'M Co. 
Bolanoa, Jalisco 


Mining Knilnrrr. 

\l: DM Lid . 

Namtu, Northern Shan siair* 
Burma. India. 


I ••((■lllllllt. I lllitli.-. r 

1U12 Baltimore Avenue 
K i f i >*.t ■* i"*i t y. |fo 


* •>n*ullluic Mlnlnn Knilnrrri aud 
Mine Mil nit kit*. 

60 Broadway, New York City. 


London. England. 

28 and 29 St. Swlthtns Lane, 

Mexico. D. F., 

Avenlda 16 de Septlembre, Num. 48. 

Cable: Mlntnanco. Code: Bed. McNeill 

OSMONT, Vance C, 

Mining I nt In. -r 
of Pnnlcla & QmnonL In.- 
Civil. Hdy. and Mlnlnk- Engl 

IQSft Mnnmlnork Hdg. Sun I r ftnejeGO 

PAUL, W. H., 

Mining EnglnrtT 

Genernl MnrmKi-r 1>olores Mlnea Co. 
Madera. Chlhuahun, Hex I CO, 


< ubnuIiIok tirologlnl. 
San Juanclto. Honduraa. C. A. 


M Inline lintliifir. 

1057 Monadnock Bdg.. San Francisco. 
Cable: Fredmor. Code: Bedford McNeill. 

(Reginald Pawls, Henry BrelToh.) 

Balfour House. Flnsbury Pavement. 

London. E.C. 

Cahl*v Platoons. Code: Bedford McNeill. 

McCUNE, Raymond. 

Mining Knxlneer. 
Room 2738 Whitehall Bdg.. New York. 

Lima. Peru. 
■ ';it '!••: Raycune. Code: Western Union. 

MTJDD, Seeley W., 

Mining Knglneer. 

1208 Holllngsworlh Building. 
Los Angeles, Cal. 

Code: Bedford McNeill. 

PAYNE & CO., F. W., 

Dredging Knglneem. 

62. London Wall. London. E.C. 
Cable: Payndredge. Code: Bed. McNeill. 





632 Dooly 


. Salt 



MUNRO, C. H., 

Mining Engineer. 

Monadnock Bdg., San Francisco. 

Cable: Ornum. 

Code: Bedford McNeill. 


<orirint(lnn Mining: Engineer*, 

Worcester House, Walbrook. London. 

and 35 Wall St.. New York. 

Cable: Undermined. Usual Codes. 

Mclaughlin, r. p., 

i nn-iiJi Inii (.rologlnt nod Engineer 
• HI end Metal Mining. 
SI 8 Mills Bdg.. San Francisco 
Cable- Roy la ugh 

MYERS, Desaix B., 

Mining Engineer. 

321 Story Bdg.. Los Angeles, Cal. 
Pblladelphla Address: 1521 Spruce St. 

PERKINS, Walter G., & Co., 

Metallurgical Engineer. 

62. London Wall, 
London, E.C. England. 

MERCER, John W., 

Miniate Knitlnpi-r. 

Qen Mgr South American Mines d 

Mills Bdg.. Broad St.. New York 

NAHL, Arthur C. ( 

Mining Engineer. 

Trlunfo. Baja California. Mexico. 

PERRY, 0. B. 

Mining Knurl hit r. 

165 Broad way. New Vc 

H k- 


Frank Merrlcks. G. Allen Crane. 

5 & 6 Great Winchester Street. 

London. E.C. 

Coble: Dne-tniology. Code: Bed. McNeill. 

NEILL, James W., 

Mrtnllurgli.1 and Mining Engineer. 

159 Plerpont St.. Salt Lake. Utah 
Una. Cal. Snelllng. Cal. 


Howard Polllon. C. H. Polrler. 

Mining Engineer!.. 

63 Wall St.. New Tork City. 

MERRILL, Charles W., 


121 Second St.. San Francisco. 
Cable: Lurco. Codes: Bedford McNeill 
and Morelng & Neal 



Mining; Engl 


Van t rent, 





ConHOltlnK I'i't rirlr ii m I ln^liH'rri. 

California Oil Properties. 

Mills Building. San Francisco. 

Cable: Petreng. Usual Codes 


I , Ilgl DI'ITI, 

121 Second St., San Francisco. 
Cable: Lurco. Usual Codes 

Bainbrldge. Seymour & Co. 

NICHOLS, Horace G., 

Ml nine: Engineer, 

352 Salisbury House, London. E.C. 
'""able- Raftera Codes 





Ing E 

It 1 m-er. 

55 Wall 


New York 

MERRILL, Frederick J. H., 

Mining Engineer and GcologlM. 

(Late State Geologist of New York.) 

624 Citizens Bank Bdg.. 

Los A ngel^g. Cal. 

NOYES, William S., 

Mining Engineer. 

819 Mills Building. San Francisco. 


Mining Engineer. 

Room 210. 255 California 
San Frnncisrn 

MICHELL, Geo. V., 

Mining Engineer. 

Specialty: Placer Mining. 
15 Great St. Helens, London, E.C. 


(Franklin W. Smith. Ralph A. Ziesmer.) 
Commit Ing Mining Engineer*. 
Work In Mexico n Specialty. 

Rlshpo Ariz CndPT Bedford McNeill 


Thomas H., 

Mining Engineer. 

St. Agnes, Cornwall. 



January 3, 1914 


PROBERT, Frank H., 

Consulting Ktitlo'i-r and Mining 

Central Bdg.. Los Angeles, Cal. 
Cable: Probert. Code: McNeill. 


Mining l^nulpi'iTu mill MetnllurglMln 
SO Maiden Une, New York. 
Complete ore testing plant. 


Mining Engineer**, 

55 Liberty St.. New York 

PURINGTON, Chester W., 

Mining Engineer. 

62. London Wall. London. E.C. 
Cable: Olenpk. Usual Codes. 


( onHullIng Knelnorr. 

Mining Investigations carefully mane 

for responsible intending Investors 

165 Broadway, NVw York. 


Mining ii ml Metallurgical F.ntl neer. 

Fundicion de Los Arcos. Toluca. 


Cable: Metalminer. Code: Bed. McNeill 


Metallurgical Engineer. 

Zinc Smelting and Electrometallurgy. 

Jemeppe sur Meuse, Belgium. 

Cable: Aljonak. 929 Chestnut St.. Phila. 

ROGERS, Allen Hastings, 

Conaultiug Mining Kntlm-'T. 
2UI Devonshire St.. Boston. Mass. 
71 Broadway. New York. N. Y. 
r'ahle: Alhasters. 

SIZER, F. L., 

Contiultlng Mining Englui-tT. 

915 First Nafl Bank Bdg.. 
San Francisco. 

RADFORD, William H., 

Alluvial Mining. 

D Broadway. San Francisco. 
Cable; Bandan. 

ROGERS, Edwin M., 

Conitultlng Mining Knglueer. 

32 Broadway, New York. 
Cable: Emrog. Code: Bedford McNeill, 

SMITH, Howard D., 

Mining Engineer. 

Kohl Bdg.. San Francisco. 

Cable: Diorlte. 

Code: Western Union 

RA1NSF0RD, R. S., 

vi | n I ni; Engineer. 

Manager Argonaut Mining Co. 

Jackson. Amador County. California. 

ROMER, ii. F. P., 

Mining Engineer. 

2 Sophlapiein. Amsterdam. Holland. 

Cable: Remor. 

Code: ABC. 5th Ed. 

SMITH, J. D. Audley, 

Mini UK Engineer. 

P. O. Box 1557. 9. Bridge St., 

Sydney, Australia 

Cable: Jadunand. All Codes 

RAYMOND, Robert M., 

>l I nl hi; Euglneer. 

The Exploration Co. of England and 

Mexico. Ltd. Mutual Life Bdg. No. 523. 

Mexico. D. F. 

ROSS, G. McM., 

Mining anil Consulting Engineer. 

Yosemite Club, Stockton. California. 

SMITH, Reuben Edward, 

Mining Engineer. 

c/o Lenskoi G. M. Co.. Bodaibo. Siberia 
Cable: Resmith. care Lenzoto. 

Code: McNeill. 190S 

RAYMOND, Rossiter W., 

Mining: I'.iiKlut-iT inn! MetnllurKlitt. 
29 W. 39th St.. New York. P. O. Box 223. 

ROSS, John, Jr., 

Mining nnd (nti-.ul 1 1 tig Bngta*? 
Sutter Creek, California. 


Mining Engineer and Melnllurglfit. 

Oregon City. Oregon. 

READ, Thomas T., 

Associate Editor 
Mining and Scientific Press. 
Woolworth Bdg., New York. 
Cable: Pertusola. 



City Deep, Ltd. 

P.O. Box 1411. Johannesburg. 

South Africa. 

SPILSBURY, E. Gybbon, 

Consulting, Mining nnd Metallurgical 

45 Broadway. New York. 
Cable: Spllroe. 

REID, Walter L., 

Supt. Smuggler-Union Cyanide Plant. 

Tests. Design and Construction. 

P. O. Box 471, Telluride. Colo. 

ROYER, Frank W., 

Mining Engineer. 

Consolidated Realty Bdg., Los Angeles. 

and Apartado 805 Mexico, D. F. 
Cable: Royo. Code: Bedford McNeill. 


J. Edward, 

Mining Geologltit. 

Bullitt Bdg., Philadelphia 



Mining Company of 


REVETT, Ben Stanley, 

Mining Engineer. 

Alluvial Mining and Installations. 
Breckenridge. Colorado. 

SCOTT, Robert, 

Inventor and Builder of the 
Scott UulekMllver Furnace. 

49S S. Eleventh St.. 
San Jose. California 

STANFORD, Richard B., 

Mlulnir KiiiiliHM-r. 

Room 206. Metropolitan Bank Bdg.. 

New Orleans. La. 

Cahle: Stanford. Code: Bedford McNeill. 

RICHARDS, Robert H., 

Ore Dressing. 

Make careful concentrating tests for the 

design of flow sheets for difficult ores. 

491 Boylston St.. Boston. Mass. 

SEARS, Stanley C, 

Mlnlnc: BDKloerr. 

Reports. Consultation and Management. 

705 Walker Bank Building. 
Salt Lake City. Utah. Usual Codes 

STEBBINS, Elwyn W., 

Mining IOuk liu-.-r. 
813 Mills Bdg.. San Francisco. 

RICKARD, Edgar, 

Business Manager 

The Mining Magazine. 

819. Salisbury House. London, E.C. 

Cable:01lgoclase. Code:Bedford McNeill. 







52 Broadway. New York. 
Cable: Fresharp. Code: McNeill. 

STEVENS, Blarney, 

Engineer and .Manager. 

Lane-Rincon Mines lng. (S. A.) 

Temascaltepec. Est. de Mexico. 


RICKARD, Forbes, 

Mining Engineer. 

Equitable Building, Denver. 


Mining Engineers 

Edificlo La Mutua 200. 
Mexico, D.F. 

STINES, Norman C, £"££„. 

Polefskoy. Mramorskaya Station. 
Perm Government, Russia. 
Cable: Normstlnes. Ekaterlnberg. 

Code: Bedford McNeill (both editions). 


Editor. The Mining Magazine. 

819, Salisbury House. London. E.C. 

No professional work undertaken. 

Cable:Qllgoclase. Code:Bedford McNeill. 

SIMONDS, Ernest H., 

Metallurgical Engineer. 

1105 Crocker Bdg.. San Francisco. 


Consulting Engineer. 

Egypt House, 36-38 New Broad St.. 
London, E.C. 

January t. l"li MINING AND Mil Mil h I'RRSS 



♦l^rofiossioiicir '0 irocl*orij- 

STORMS, William 

MlHlaa CroluiUl 

Mttiinii Mi 
Mil BllsmH »t« . 



• .-' 







TOLL. Rensselaer H., 

410 Boston HiIk . Dai 
Rontoll Coda Bedford M 

WELCH, R. Kemp, 

< •■■■•Milting 
Mining anil Mf-rlinnlcal I iiJm r. 

Bxaroln • ■! t». Davi 
Fori Hi.lw.ii 

STRAUSS, Lester W.. 

Kaglarer uf Mine*. 

Lima, ivru, s a 

Cabla Laalra-ldma Code II. 1 MoNalll 

TOLMAN, Cyrus Fisher, Jr., 
Haaaalilai Baaaaaata Oaalasftat* 

P. O. A till real. 
Stanford University. Cal. 



Mining l-luglnrrr. 


Cabl avo Code: Bedford McNeill 




ii li. a; 1 



SI Brc 



i-w Y 



Mining I.. -ologlnf. 

708 MIIlK H.Ik- San Francisco. 

62 London Wall, London 

Cable Latlti Iford McNeill 

WESTERVELT. William Young, 

< » i n * ii 1 1 1 ii k Mining 10 n k I nrrr. 
17 Madison Ave. (Mudlson Square. Hut) 

N'.-w York. 
Cable: Casewest. r.,,).- Bedford McNeill 

SYMMES, Whitman, 

Mining Enclnrrr. 
Mar. Mexican Mine, etc 
Virginia City. Nevada. 

TURNER, Scott, 

Mining Eniclurrr. 

Cable: Arctlccoal 

Trom so. Norway. 

Code: McNeill. 19f>8 


Mining I : ii tin •■it. 
Manag'-r. Syndicate Mining <' 
Aroroy, Maabata, P. I. 

Bainbi idg<-. Seymour & Co. 

TEALE, J. W., 

Mining Koclorrr. 

Salisbury House. London. EC. 

Cable: Basera. Usual Codes 

TWEEDY, Geo. A., 

II I n I nt liiitiliii-rr. 

Rosarla. Slmiloa, Mexico. 

Gen. Mgr. Mlnas del Tajo. Rosarlo. 

Mexican Mines Co.. Bolanos. Jalisco. Mex. 

WINCHELL. Horace V., 

Consulting Geologist Amalg. Copper Co. 

506 Palace Bdg.. Minneapolis, Minn. 
Cable: Hncewln. 

TEN OEVER, Uneko, 

Mining Engineer. 

Mexican Mines and Lands 
„ t . . F J ox - 179 - Blobee. Arizona. 
CaMo Lnrko. Code: Bedford McNeill 


Mining Engineer and Geologlwt. 

534 Confederation Life Bdg., 

Toronto, Canada. 

Cable: Tyrrell. Usual Codes. 


Mining Engineer. 

210-11 Continental Bank Bdg.. 
Salt Lake City, Utah. 

Code: Bedford McNeill, 


00 Union Oil BdE.. Los Angeles 

11! Broadway. New York. 

5 London Wall Bdgs.. London. E.C. 

Cable: liimlli.. Code Bedford McNeill 


Mining* Engineer. 

Rahman Tin Co., Intan. Upper Perak. 
Malay States. 
Code: McNeill H908 edition ). 

WISEMAN, Philip, 

Mining Engineer. 

1210 Holllngsworlh Bdg.. Los Angeles. 
Codes: Western Union; Bed. McNeill. 
Cable: IilwlBeman. 

THOMAS. Kirby. 

Mlnlnu Knclnrrr. 
Examination. Valuation and Explora- 

.lon of Mining Properties 
42 Broadway. N-u- York, 


Commit I ng Mining Engineer. 
42 Broadway. New York. 
Cahle: Porphyry. 

WOLF, J. H. G., 

Manager North American 
Exploration Co. 

1023 Mills Bdg.. San Finnclsro 


Mining Engineer. 

441. Salisbury House. London. E.C 
Cable: Wethorne. Code: McNeil! 1 '.»0<t 


KntrlneerN nail Contractora* 

Mining and Metallurgical Plants. 
Industrial Equipment and Installations 
Van N'uya Bdg.. Los Angeles. 


Mechanical Mining Engineer. 

Mill Tl-sis. Design, Consirui-tlng. Man- 
agement. Special ore-handling Plants. 
Victor, Colorado. 

THURSTON, E. Coppee 

Mining Engineer. 

Oar*- of A. iioerz & Co.. 

Pinners Hall. Austin Friars. 

Londonr E.C. 


Mining Engineer. 

208 McPhee Building, Denver. 
Choix, Slnaloa, Mexico. 

i lode P.. -.Kurd McNeill 

WRIGHT, Charles Will, 

Mining Engineer. 

Ingurtosu. Sardinia, Italy. 
Cable: Wright, Arbus. Code:Bed.McNV|Il 

TIMMONS, Colin, 

Mining Engineer. 

Dunton. Colorado 


.Mining Engineer. 

62. London Wall, London. E.C. 
Cable:Natchekoo. Code:McNelll. both ed. 

WRIGHT, Louis A., 

Mining Engineer. 

814 Mills Bdg., El Paso. Texas. 

Code: Bedford McNeill. 


Salisbury House. 
London. E.C. 
Cable: Tltcomb. Code: Bedford McNeil) 
(two editions I. 

WEBBER, Morton, 

Mine Valuation and Development 

39 Cortlandt St., New York. 
Cable: Orebacks. 


Mining Engineer. 

166 Broadway. New York. 
Cable: Ikona. Code: Bedford McNeill 

This Directory contains more engineers' cards than that of any other min- 
ing publication. It is therefore more often consulted, and affords a dignified 
way for an engineer to let his friends know where he is and what he is doing. 

Rates on first page of Directory. 



January 3. 1914 

Drury. L. M. 


Atkins & McRae. 
California Ore Test- 
ing Co. 
Baverstock & Staples. 
Clbson. Walter L. 
Hanks. Abbot A. 

Irving & Co.. James. 
James Co.. The Geo. A. 
Luckhardt Co.. C. A. 
Miller & Brown Co.. Inc. 
Perez. Richard A. 
Smith. Emery & Co. 
Twining Laboratories. 

Burton. Howard E. 

Frost. Oscar J. 
Richards. J. W. 
Wood & Co.. Heniy E. 


Ely. E.. Dover Labora- 


Vnung. H. W. 


Ledoux & Co., Inc. 

Petrological Laboratory. 


Oitchett & Perguaon. 
I Haulier. M.. Jr 

Bardweell. Alonzo F. 
Bird-Cowan Co. 
General Engineering Co. 

Officer & Co.. R. H. 
Union Assay Office. Inc. 


Griffith & Co.. Daniel C. 


Assayers, Chemists, and Metallurgists. 
Control and Umpire Assays. 

Careful Analytical Chemists. 
616 South Olive St.. Los Angeles. Cal. 

BARDWELL, Alonzo F., 

(Successor to Bettles & Bardwell.) 
Cuxtoni Assay er and Chemist. 
168 S. W. Temple St.. Salt Lake. Utah. 
Ore Snippers' Agent. 


Analytical Chemists and Metallurgist*. 

223 W. First St.. Los Angeles. Cal. 
Technical Examination of Minerals and 
Organic Products. Assaying. 


Cuatom Awsuyers and ChemlHta. 

(Frank A. Bird. Charles S. Cowan.) 

Agents for Ore Shippers. 

160 S. W. Temple St.. Salt Lake. Utah. 

BURTON, Howard E., A ^;? m U" 1 

60S Harrison Ave.. Leadvllle. Colorado. 
Specimen Prices: Gold. 50c: Gold and 
Silver. 75c; Gold. Silver and Lead. II: 
Gold. Silver and Copper. H.50 


AnsnytTs and Chemists. 

El Paso. Texas. 
Umpire and Controls a Specialty. 

DRURY, L. M., 

Tiiiiiiini Aitiay Ofllre. 
Fairbanks, Alaska. 

ELY, E., Dover Laboratory, 

Auayer anil Chemlat. Fees: Gold. 60c, 

Stl\.-r. 45c: Copper. $1; Iron Ores. Iron. 
|1; Phosphorous J1.50: Sulphur. $1.75. 
53-55 E. MrPa-lan St.. Dover. X. J, 

FROST, Oscar J., 


511 18th St.. Denver. 

GIBSON, Walter L„ 

Successor to 

l-'nlkennu AvinyinK Co., 

Ausuy Office and Analytical Laboratory. 

School of Assaying. 

824 Washington St.. Oakland. 

Phone 8929. 

Umpire assays and supervision of sam- 

fllng. Working tests of ores, analyses. 
nvestlgations of metallurgical and 
technical processes. 

Professor L. Falkenau. General Man- 
ager and Consulting Specialist. 

HANKS, Abbot A., 

Chemist und Aaaaycr. 

Established 1866. 

630 Sacramento St., San Kranrtseo. 

Control and Umpire Assays. Supervision 

of Sampling at Smellers. 

Cable: Hanx. Code: W. U. and Bed. McN. 

GRIFFITH & CO., Daniel C, 

AMMiiyvrM. McliilliirirlntN nixl Sampler*. 

8. Victoria Avenue. Blshopgate. 

London. E.C. 

Cable: Oryffydd nsual Codes. 

CALIFORNIA ORE TESTING CO., a. w. <;ieger. »i«r. 


All tests conducted under experienced supervision. Write for booklet. 
Office: 630 Sacramento St. Testing Plant: 591 Ray St .. San Francisco 



159 Plerpont Avenue. Salt Lake City. Utah. 
Design and Erection of all Classes of Reduction Plants. 



Supervision of Ore Sampling. Technical Analyses. Cement Testing. 
No. 28-32 Belden Place (off Bush near Kearney). San Francisco. 

LEDOUX & CO., Inc., 


Independent Samplers at the port of New York. 
Representatives at all Refineries and Smelters on Atlantic Seaboard. 
Office and Laboratory: 99 John Street. New York. 


H H. Ward. Harold C. Ward.) 


Sampling of Or :- at Smelters. 53 Stevenson St., San Francisco. 

Telephone, Kearny 5951. 




.■AM P. HI 

I.I. EH, 






Ores Tested to Determine Best Method of 



Designed and Installed. 

532 Commercial St.. San Francisco. Cal. 






& CO., 


Testing Plant, 


\ n ge lea. i 






Represent Shippers 

at Smelters, Test Ores. 

and Design Mi 


651 Howard Street, 

?an Kranclsco. 


So. Los 

Angeles Street 



HAUBER, M., Jr., 

Cbenilst and Assnyer. 
Control and Umpire Assay 
Agent for Ore Shippers. 
305 N Stanton St.. El Paso. T. 


Sanitary, Chemical, and Bacteriological. 
Assayers and Metallurgists. 

Fresno. Cal. 

IRVING & CO., James, 

(■old Ri-nucm n ml Aksujitn. 

107 N. Spring St.. Los Angelas. Cal. 

Cash for Bullion and Ores. 


Assayers and Chemists. 

Box 1446. Salt Lake City. Utah. 

OFFICER & CO., R. H., 

AsunyiTN nud Chemists. 

169 South West Temple Street. 
Salt Lake City. Utah. 

PEREZ, Richard A., 

Assayer. Chemist and Metallurgist. 

(Established 1895.) 
120 N. Main Street. Los Angeles. Cal- 

WOOD & CO., Henry E., 


1734 Arapahoe St., Denver. 

Ores tested in carload lots. Amalga- 
mation, concentration, cyanide. Wether- 
ell magnetic separator. Blake electric 
oeparator. Send for circular. 


\V. Hnrold Tomllnsou. 

Swathmore, Pa. 

Petro graphic Work. Rock sections made. 

Microscopic examinations of rocks. 

YOUNG, H. W., 

Chemist and Assayer. 

Prompt attention to samples by mail. 
Box 348. Reno. Nev. 


AsMayer and Chemist. 

1118 Nineteenth St., Denver. 
Ore Shippers' Agent. Write for terms. 
Representatives at all Colorado smelters. 



180 Pases. SI. 00 Postpaid 


MINIM. II Mil It l'KI S.s 


Hand Urincler 

» ^^^ BRAUN ^1 

Gasolene Assay Furnace 

Specialists in 

Metallurgical, Technical and 

ndustrial Laboratory 


Oil Testing Stills 


Cement Testing Apparatus 

Complete Catalogue on Request 

Sifting Machine 

Oil Separator 

^— '-^^p™ 

F B «AU N 







January 3. 1914 

Gasoline Locomotives 

when properly designed, are proving as reliable in 
service as any other form of motive power. 

Baldwin Gasoline Locomotives 

follow steam locomotive design where practicable. They 
have a positive drive from engine to wheels. Investigate 
their merits for industrial or contractors' service. 
Further particulars on request. 

The Baldwin Locomotive Works 

Philadelphia, Pa., U. S.A. 

Cable Address: "Baldwin. Philadelphia." 
St. Louis. Mo.. Wright Bldg. New York. N. Y.. 50 Church Street 

Chicago. 111.. Railway Exchange Richmond. Va.. Travelers Bldg. 
Portland, Ore.. Spalding Bldg. San Francisco, Cal.. 810 Sansome St. 


Electric Endless Rope Haulage on the 
Canadian Pacific in British Columbia 

A rugged, far-away country like the Canadian North- 
west requires rugged, never-break-down machinery; 
failure is serious up there because proper repair facil- 
ities are many miles away. The Canadian Pacific 
judged by VULCAN quality and VULCAN past 
performance when it needed fool-proof haulage ma- 
chinery for the "Western Empire." 

Send for (he Electric Hoint Book. 


1734 Main St., Wilke»-Barre, Pa. 
New Vork— 30 Church St Chicago— 918 HcCormick HMg. 


These locomotives are designed in every 
detail to meet the requirements of severe 
service. They are sturdy, simple and 
powerful — always ready for instant use. 

All details are accurately finished to stand- 
ard gauges, and are absolutely inter- 
changeable with locomotives of the same 
class and size. 

This insures against long delays when parts wear out, as a stock of interchangeable 
repair parts, sure to fit, is kept on hand for immediate delivery. 



Mccormick liuilding, Chicago. Dominion Express Building, Montreal, Canada. 

Carl O. Borchert, Pioneer Bldg., St. Paul, Minn. A. Baldwin & Co., New Orleans, La. 

Northwestern Equipment Company, - Seattle, Wash., and Portland, Oregon. 

N. B. Livermore & Co., San Francisco and Los Angeles, California. 

.laiiUMri 1 l"'l * 

MINING AND m 11 MM |, |'|<! ss 


We can rebore worn Hammer Drills di ^NY M \KK. Return them same day. 

c H VRGE, Three Dollars Each. Q Furniah new pistons if desired, at standard prices. 

Give us a trial order, ami save yourselves time and 
expense required to send drills back East for rerinishinjr. 

Rix Compressed Air & Drill Company 

120 E. Third St., Los Angeles 

5 First Street, San Francises 


Manufacturers Of Rock (ru«hrr», Ore t-Vrdrrn an<l all kinds 
nf Or* MllllBK Mn.-l.lnrr>. K*pr<-lnll> th.- Ilrnx.r Uunrl. Mill. 

■ : iy,..- Ol Chilian Mill on the market. 
Aak fur rsilnloK No, 10. 






OTHERS. Really grind, iwico 
n* inu'h MMIM l.i fimr 

iucIi mi. 


Patented — " 

pending Ilttona. K 

Inch to 200 Mch Dlurhirgn. 
Guaranteed to beat all others 
saving gold Inside the mill. 
Write tor grinding tueti 
and particular*. 




In Your 

You should have some suitable system of mechanical handling 
for the coal and ashes. 

Von can't afford to pay the costs of doing these things In the 
nlil way— coats for labor, costs for waste of fuel, costs for reduced 
general efficiency of operation. 

The bcsi conveyor system for the power house is the 
coal, distributing it to overhead bunkers; and takes out the 
ashes, delivering them to wagon or car for removal — all perfectly 

Then there are other Webster methods of exact suitability 
for all kinds and sizes of power plants. 

Let us tell vou how you may reduce expense and improve 
results In your boiler house. 

Put Your Problems 
Up to Us 


Perkins Carrier Delivering Coal to BunkerB 

The Webster MTg Company, Tiffin, 0. 

NEW YORK: 88-90 Reade Street 


CHICAGO: McCormick Building 

Driving Mechanism, Created by Motor 

Pitlsbarg, Pa. Dempcy-Degener r'o.. 14 Wood (Street 

Dei mil Mich. Palmer-^ee Co., Woodward Avenue 

Birmingham. Ala. Carpenter a Hill man, 707 Empire Building 

Douglas. Ariz. L. W. Mendenhall, 1019 Avenue G 

Seattle. Wash. K C. Brink ley, 'M0 Jackson Street 

Denver. Olo CD. Dean, 1718 California Street 

Salt Lake City. Utah Utah Engineering A Machinery Co. 

Los Angeles. Cal Calif. Machy. A Equip, to., 921 N. Main St. 

Vaocoaver, B. C B. C. Equipment Co,, Bank of Ottawa Building 


January :!. l'.»14 

Holes to a depth of 12 feet 
are easily drilled with a 



As a cost reducer it is superior to 
any other drill now manufactured. 
It is the real "one man" drill. 
It pleases the drill runner and 
more than satisfies the most exact- 
ing mine manager. Such is 
the result wherever 


have been installed. They will do 
the sajne for you. A descriptive 
bulletin will be sent on request. 

McKiernan-Terry Drill Co. 

232 Broadway, New York 

Rock Drills, Core Drills, Sheet Pile 
Hammers, Atlas Jacks 

i jimtiliiui Beprosentatdvee: 
n.i.hiui AlUs-Chalmers, Ltd., Toronto. Out. 







AS all the Plasticity, Density and Velocity 
Water -Resisting Qualities and Absence 
of Objectionable Fumes Which Have 
Made Our Regular Gelatins so Effective 
and Satisfactory. 

STATE what your blasting con- 
ditions are. Our Technical 
Division has valuable data con- 
cerning this Low Freezing Gelatin. 
Give it a trial and note the in- 
creased production and how sel- 
dom thawing is required. 

Address Dept. 119 


Wilmington, Del. 

KMiil.lish.iJ 1802 

Pioneer Powder Makers of America 





Chicago Pneumatic Compressors 


in San Francisco Stock, 


Also Single Stage Compressors, Chicago Rock 
Drills, Stoj ing Drills and Plugger Drills. 

Chicago Pneumatic Tool Co. 

Address N. E. OTTERSON 
71 First Street, Saa Francisco u 


Universal Cyaniding Machine 

Designed for extracting values where fine 
grinding is not required. 

Complete treatment in one tank embodies the 
work of classifier collector, treatment tank and 

These machines are recommended for applying 
complex treatments to refactory ores; suitable 

for working tailings. Literature on request. 


Metallurgical Engineers 

Hibernian Bldg. Lot Angeles, Cal. 



Outside packed plungers — deep bronze-lined 
renewable stuffing boxes with ready access to 
water valves by side plates. 

Write for Bulletin ?■ 101-32 

RdLEItescett Steam Pomip Cm 


Milwaukee, Wisconsin 


Mining ** d Cyanide Plant Equipment 

Settling, Clarifying, Agitating and 
Leaching Tanks 

All Sizes and Dimensions, Made from Besf Quality of California 
Redwood. For Prices and Information, address department T 

Redwood Manufacturers Company 

Kohl Bldg., San Francisco 


January 3. 1914 

California Ore Testing Co. 

Office: 220 Mills Bdg. Plant: 591 Bay Street 

San Francisco 

Ml branches of Ore Testing, 

Ore Treatment schemes developed, 

Consu ling Metallurgists in mill problems, 
Metallurgical losses analyzed 

with adaptation of efficiency methods 

The most complete ore testing plant in the West, 
recently thoroughly overhauled and newly equipped to 
unusual advantage in testing ores. Write ior literature 
and How sheet. 

A. A. HANKS, Pres. 

A. W. GEIGER, Mgr. 


Automatic, High Speed, Lock Coil Track Cables, Railroad 
Type Trucks, Pony Trams for Light Tonnage. 




are absolutely fool-proof and furnish uniform 
superheat which prevents all wet steam troubles 
and reduces coal bill by 8% to 25%. depend- 
ing on prime mover in use. Write for proof. 

POWER SPECIALTY CO., Ill Broadway, New York 

Balboa Bdg.. SAN FRANCISCO Peoples Gas Bdg.. CHICAGO 



High Grade Silica, Chrome, 
Magnesia and Fire Clay Brick 


Chrome Ore and Spaeter Dead Burned Magnesite 


Mining Filter 


CHICAGO, U. 8. A. 

Material and Service Unexcelled. 

Scullin-Gallagher Iron & Steel Co. 

Main Office and Works St. Louis. Mo. 

Manufacturers of High Grade Steel Castings 

Matte Ladles and Pans — Slag Bowls — Bullion Molds — Liners — Roll 

Shells — Dies — Cams — Tappets — Bosses. 
Also miscellaneous castings of every description. Send us your inquiries. 
B. H. PECK. Western Sales Agent. White Bldf .. SEATTLE. WASH. 
Definite delivery frivHn. at time order or inquiry is placed. 





High Bridge, New Jersey 

Are Made For Operation 

By Any Power. 
Horizontal or Vertical 

Stationary or Portable. 
Write ror catalogue "H" 



Heaioo & HubbeU. Chicago rleodrie & BolihoS Mfg. & Supply Co.. Denver 

Nanus B. Millet Co.. Sin Frmncbco English Tool oc Supply Co.. Kum City. Mo. 

R«loh B. Crt-r Co. . 1 52 Chnmben Si. . New Yotl 

Butters New Metallurgical Laboratory 

All work in the hands of J. E. Clennell. 

Processes devised for the treatment of complex ores. 

Large scale tests carried out. Inquiries solicited. 

Address communications to laboratory, 
221 59th Street. Oakland. California. 


Head Office: SO Church St, New York. U. S. A. 



See cover page August 9, 

1919 Issue. 

Ask Tor our guarantee as 

to economy. 

Bury Compressor Co. 
Erie, Pa. 

Frenier's Spiral Pump 



Allis-Chalmers Co.. Stearns-Roger Mfg Co. 

Chicago. 111. Denver, Colo. 

Harron. Riekard & McCono. San Francisco. Cal. 

Frank R. Perrot, Perth. W. Australia 
FRENIER & SON, Rutland, VI. 


Hand Power, Horse Power, (lasoline, Sleant, Air 
and Electricity. Complete line. Send for catalog. 


745 First National Bank Bdg, CHICAGO, ILL. 


Of every kind and description. Made to the United States 
Government and all recognized specifications. Cementation 
Steel Castings for crank shafts, connecting rods, gear blanks 
cylinders, etc., and all parts where a maximum ability to re 
slst wear Is required and also where a high elastic limit If 

We solicit your valued orders and guarantee deliveries 


H. L. VAN WINKLE. Sole Aieol P.rific Cout. 160 Bole Si., Su FVudra 


For all transportation purposes. 
Twenty-five years' practical experience. 


I'M I 





v.. I. No. 1 and No. 1 

Permanently stop til leuKs of steam, 

water, tire or oil in iron or steel cast- 
ings, boilers, tanks, piping, pumps. 

screw-thread joints, flanged joints, etc. 

The) are easy to apply, harden quickly 
ami make permanent repairs, proved 
by years in use. 

Every Engineer should read our new 
Ho. 12 Illustrated Instruction Book 




36 Sacramento St. 


the civil engineers' 

I20th Thousand. 1913 

Third Issue 

of the 19th Edition. 

1300 Pages. Illustrated. 

Morocco, l6mo. 

Gilt Edges. 

Thum-indext, $5 00 net. 

1913 Issue Now Ready. 

The 1911 issue being exhausted, we take advantage of 
the fact by correcting, in the 1918 issue, such errors as 
have been discovered in its predecessor. 

Thum-indext without extra charge. 

< >f the 1911 issue we offered thum-indext copies at an 
advance of 25 cents each. 

This experiment having given satisfaction to our 
readers, we are thum-indexing the 1913 issue, and we 
now ofTer this added feature without extra charge. 

In other words, the price is now 

$5.00 net, thum-indext 


Dept. B 
267 S. 4th Street Philadelphia, Penna. 



(1) The burner used is the Case Patented Low Pressure Kuel 
Oil Burner which requires less ounce* of air pressure to 
atomize oil thoroughly than other burners require pound* of 
air pressure. 

(2) The inner linings are of very refractory fire clay tile 
and may be easily and quickly replaced when necessary. The 
outer lining is protected fully and seldom needs renewing. 

(3) Uniquely effective pressure fan furnishes air at a con- 
stant pressure of about 6 oz. and uses ony ! to A II. P. 

There are more reasons in our Catalog. Write for it. 

THE DENVER FIRE CLAY CO., Denver, Colo , U. S. A. 

The Largest Manufacturers ol Furnaces in the World 

You Will Make No Mistake 

in equipping your Belt, Bucket, or 
Pan Conveyors with the 

Merrick Conveyor Weightometer 

It will automatically record, in any unit desired, 
the actual weight of material transported — with a 


• Write today for descriptive catalog 
and further particulars. 





January .'!. 1!»14 


The Principled nml General Methods of Operntlou lu the 
I nh.-.r StnteN. 

By RALPH ri.KMKNT BRYANT. F.E., M.A.. Manufac- 
turers" Association. Professor or Lumbering. Yale Uni- 

8vo. xviii 4- 5ft0 pages. 1?." figures. Cloth. $3.50 net. 

Covers the more important features of operation. Dis- 
cussea at length the chief facilities and methods for the 
movement of timber from the stump to the manufacturing 
plant, especially lagging railroads. 

Rock Drilling 

piled by the Construction Service Company. 

8vo. viii + 319 pages. 127 figures. Cloth. $1.00 net. 
In this work particular reference is made to open-cut 
excavation and submarine rock removal. Presents the 
results of many months of first-hand observation of actual 
work by skilled engineers making a study of representa- 
tive jobs affording a variety of conditions. 

Building Stones and Clays 

Their Origin, < hariieterH ami Examinations 
By EDWIN «'. ECKEL, C.E., Fellow Geological Society 

of a in.' ri i a. 

8vo, xiv -- 264 pages. 37 figures. Cloth. $3.00 net. 
The extensive reference lists presented in this book, 
serve to point out win-re in Formation regarding 
tone oi ' any particular state may be found. 

will pro lally valua Die, 

Suspension Bridges 

Arch, Rlh« and Cantilever*. 
By WILLIAM H. BURR. Professor of Civil Kngineering 
in Columbia University in the City of New York. 
8vo, xi + 101 pages Cloth, $4.60 net. 
In this case each main structure has been given a gen- 
eral treatment so as to make one demonstration coi er 
;iii desired or useful special cases, as conducing to both 
i y and clearness, 



London Chapman & Hflll, Ltd. Montreal. Can. : Renoui Pub. Co. 




The Machine lor Mill and Hydraulic Tailings 

"puis recent invention saves values of am nature pntirelj by mechan- 
* teal means. This simple, durable and effective mach ne knocks down 
for mule-back transportation. A number are now in operation. 

a Dlbert Gold Extractor is in operation at our works and we will 
tesl any wave] or black sand sent— freighi charges prepaid. 40-lb. sam- 
ple Bumolont, Write us for Bulletin 18 with full particulars. 


138-140 First St. San Francisco 


Successfully treated, without roasting, by the 


SAVE your gold, silver, lead, copper and iron 
values in your zinc middlings and make your zinc 
saleable at ANY smelter. 

For full information, write to 


1218 Foster Building Denver, Colorado 

THEVITE made to measure 

Putman Boots&Shoes 

Ooon like a glove «"<* fit all over. 

Putman Boots are the oldest *nd best known boots for 

Civil and Mining Engineers. Th y «re sold all over the 

orld and have justly earned tlie s'ogan "The World's 

Standard." Made-to meaau'e, * ater proofed or not, 

any weight of uppers or to e*. '.ll heights, a variety 

I styles and prices that you will find satisfactory. 

Made-to- Measure Shoes 

Putman Shoes, have a peitect fit. the best of everything in 
quality, style that is "up-to-the-minute" and that custom- 
made -individuality so much sought in all wearing apparel, 
Lnce, Button or Oxford styles. Black and all the popular 
shades of Tan Leathers. Everything from the lightest 
Vici Kid to Heavy English "Hiking" bhoes. * 

Our FREE CATALOGUE is sent upon request. It 

is different frnm any oilier and will interest you. 

Self measurement blanks and full instructions free 


118 5th St. N. E. Minneapolis, Minn, 



Are adapted for al 
kinds of work. Mad- 
In all sizes. For Mines 
Contractors, Quarries 
Dredging, CablewayB. 
Slate Machinery. 


t. I.. YOUNG MACHINERY CO., San Frnnclaco, Cal. 



Eight of these installed for the city of San Francisco. 
Send for catalogue No. 25K. 



512 No. Los Angeles 8t. 4 West Berkeley, Cal. 

JltlllUII \ V I'll 1 


IOR H.ilMIM. EftSMIai 

Plopd lut>rit*alh.n CUta down 
rr|wir lull-.. BaVM powei ami 
. oat. 





t -iruiih ideal lohrtotloa hn 

purpuae, *a the craptuu* adheres tu 

the bearing surface*, preventing 

mvta'-ioroeUal contact and gmiu 

a (Inu-llko rinlmti DDOB "Mi n the 

oil or urciw ■■ must cll^Uvr Tin lr 

use will lengthen Um lift' of any Doleilnj eaff.ll**. 

\*k ua for "<>raphlto at a Lubrloanl'' No. in. wblcn ucplAlnm 



I oliililish. .1 1827 





■ jo«P« « «M CWCISU a 
1 jiailYCtr*. ■' ' 

As 'Quick' Traps Alone 

Pierce Amalgamators will pay for them- 
selves in a short time. In addition, and of 
really primary importance, no coarse, rusty 
or flour gold can possibly escape. 

Write to-day for 
catalogue No. 10. 


17S8 Broadway 


II. S. A. 


"The Coupling That 

Never Blow. Off." 


w 1 1 1 | rt 1 1 


rj Up on 
• ml ••( item loan ..r 


rHirUand, ft ilile, Hd«i 

Hrllr lor raUloiur and price. 

Mlltllllll. Hit 


723 Arch Strrrl PKUadtlphli. V. S. A. 


Lane Mill 

mix yfi ■■ 


and itpoiettiigi 
- limn Ktaoipa 

Full details on request. 


Successors to Lane Blow Speed Chilian Mill Company, 
234-247 Douglas Bldg., Los Angeles, California 


for P acer Gold Testing, in advance of dredge; 
Mineral Prospecting for Lead, Zinc, Coal, 
C pper, etc.; Oil, Gas. and Water Well Drill- 
ing; Blast Holes in Cement 
and Stone Quarries. Kquipped 
nr] h steam engine, fras or elec- 
tric motors. In writ ins specify 
class of work you arw LntBT- 


ICEWTi: Huron. Rickajd St McCone 

San I-ranciico, Cal. 
Caldwell Mach. Co.. Sealllc.Wa.S- 


Watt Carts 

for Mines and Smelters 



Easy Running 

Standard and Special 

The Watt Mining Car Wheel Co. 

Denver : 

San Francisco : 

Llndrooth, Shubart&Co. Rornpcvillp Ofllft 
■ancisco: N. D. Phelps DdmCbYlllC, VMliU 


Always the most durable and satisfactory 
sheet metal for high class construction. 

The largest stock on the Pacific Coast 
carried by the 






We Protect Our Customers 

by having made possible 


A scientific preparation for sealing the joint of Cap 
and Safety Fuse when blasting in wet or damp places. 
The use of Celakap reduces "misfires" to a minimum. 

For Prices, etc., apply to your 
Powder Company or Dealer. 

Coast Manufacturing and Supply Company 



January 3, 1914 

Succeeding Trenton Iron Co. 

Steel & Wire 



£ Wire Rope 

NO matter what the contour of the 
ground, we will construct a tramway 
that will transfer material in a bee-line 
at minimum expense; and no grades are too 
steep to surmount; no rivers or valleys too wide 
to cross; and no grading, bridges or viaducts of 
any kind are required. There is practically no 
limit to the length of these tramways. We 
have one line carrying ore twenty-one miles. 

Write for our oomptete descriptive book showing 
every form of application. And tie will be glad 
to work- upon propositions submitted to us, re- 
turning full and complete specifications and costs 
or construction. 

American Steel & 
Wire Company 

Pacific Coast Representatives 
0. S. Slcel Products Co., San Francisco, Los Angeles, Portland, Seattle 

Chicago, New York, Worcester, Cleveland, Pittsburgh, Denver. 
Export representatives, U. 3- Steel Products Co., New York 







These valves are eciv 
nomical because they will 
lelieve only enough steam 
to reduce excessive pres- 
sures. They can be posi- 
tively relied upon to oper- 
ate promptly and will not 
chatter or pound them- 
selves tu pieces. 

They can be regulated 
to reduce the pressure 
only one pound, if such 
a close regulation should be 
™ desired, and adjustment 
of the pop and pressure can be made from the 
outside of the valve. 

All parts subjected to wear are renewable. 
Either Brass or Iron Body Valves can be had, 
with incased spring or spring exposed. 

Kur durability and reliability, 
have no equal. 

"MOST supply houses sell them -yours CAN— II they DONT or WONT— tell US." 
Wrife for catalogue 


Largest Manufacturers 01 High tirade 

ELgintH-ring Specialties in the World. 

Executive Offices and Factories : 


NEW Vi 1UK.H-6S Fulton St. cniCAGO. 186N. Dearborn St. 
BOSTON. 188 High St LONIHIX.S. E.,35 Great Dover St. 


^ Vrf»?oJHS^4^ft-y^ 

The Jeanesville Triple Expansion 
Condensing Mine Pump 

is provided with Semi-Corliss Valves and Cut-off Valves. 

The Port Clearance is reduced to a minimum effecting 
the highest economy in steam consumption for direct 
acting pumps. 

Jeanesville Mine Pumps combine to a marked degree high 
efficiency, economy of operation and dependability 
under the most severe conditions of service. 

Jeanesville Pumps are the result of fifty years' manufac- 
turing experience. 

Write for our now Mine Pump Catalogue J40-32. 


WORKS : HAZLETON. PA. :; New York Offite: US Bro.d — v 

Branch Offices in all Principul Cities. 

■ I it ti nit r % !. l'.IN 


A Review of the Waterwheel 
Situation for a Quarter Century 


■Tort Pelton IVheeli Installed than >>f any 
oiIht mate 

\ target ■■negate boraepowei of Pelton 
Wheel- Installed 

■Ton loan M ,,r i ho imnortanl high hetui 
Installations to be Pelton wheels. 


Tin' Pelton Wheel was the ftm device to 
Himloally atllin water under considerable 

pressures ; 

The engineering oorpa ol The Pelton Watei 
Wheel Company have always maintained i lie 
highest standard of design unci construction: 
The boatnesa policy of The I'elton Water 
Wheel Company has always been consistent ; 
The Pelton Wheel of today In its various 
forms, meets every requirement of water 
wheel ser\ lee. 

The tame polieiet that have matte the J'' Ih", 
Wheel the u-orla"t stanftaeit of tmpnlte 
trheeU, are rapidly bringing Pelton- Francis 
turbine* to the tame position. 


89 WEST ST., 


Sole Manufacturers of Pelton Water Wheels 

^ .-. Al r M ] 

Forty-Six Years Old 

Another year of success has Just lieen 
rounded out and a new one entered with 
all the force and confidence burn of a won- 
derful past. The service Albany Grease 
gives In actual everyday work Is what has 
made it the most widely known and used 
lubricant in the world. For the lubrication 
of mine equipment requiring quality service 
at a minimum cost it Is without an equal. 
Send for a quantity to try. No charge. 

Your dealer sells Albany 
Grease — if not. order direct. 




Built in many sizes both traction and non- 
traction, for drilling all depths to 4000 feet 

Equipped For Steam, Gas or Electrical Power 

For Water Wells — Oil and Gas Wells — Mineral Prospect- 
ing — Railroad and Canal Excavations — Cement and 
Crushed Stone Quarries — Bridge Soundings— Coal Mine 
Ventilation — Irrigation, Etc. 

Write for Illustrated Catalog. 

The Star Drilling Machine Company 

General Offices : Akron, Oblo 

Branch Olllce : 2 Rector Sl_ New York City 

Works : 
Akron, Ohio — Chanute, Kansas — Portland. Ore.— Long Beach, Ctl. 

Gardner Crusher and Pulverizer 

For Laboratory Work 

This Crusher is adapted for grinding any 
material, wet or dry, to any desired degree of fine- 
ness, ranging from 2'/i" to 20-mesh and under. 

For laboratory work it is especially desirable. 
The hopper can be closed so that nothing will be 
lost and it is built exactly like the larger machine, 
with necessary changes for laboratory use. Small 
power required. Easily cleaned and always re- 
liable. Send for catalogue giving full information. 

c. o. 


Cleveland, Ohio 



January 3, 1914 

The Consolidated Mining 

and Smelting Co., of 

Canada, Ltd. 

Smelters and Retiners. Pur- 
chasers of all classes of Ores. 
Producers of Fine Gold and 
Silver, Base Bullion, Copper 
Matte, Pig Lead, Lead Pipe, 
Bluestone and Electrolytic 
Bearing Metal 

Offices, Smelting and Refining Dept., Trail, British Columbia 




Cold, Silver and Lead Ores, Concentrates, Cyanide 

Product, etc.. Lead Bullion, Dore Bars, Gold Dust 

and Bullion. 

Assaying of hand samples has been discontinued. 



United States Smelting, 

Refining and Mining Co. 

55 Congress St, Boston, Mass. 

NKEOI.BS mining and smelting company 

Custom Lead and Copper Smelters and Custom 
Lead and Zinc Concentrator at Needles, Cal. Ad- 
dress Needles Cal., and 908 W. P. Storey Building. 
Los Angeles. Cal. 


Custom Copper Smelter at Kennett, Cal. Address 
Kennett. Cat. 


Custom Lead and Copper Smelters at Mldvale, Utah. 
Address, Salt Lake City, Utah. 


Custom Cyanide Mill at Gold Road. Arizona. 


Custom Copper Smelter and Electrolytic Copper 
Refinery at Chrome. N. J. Electrolytic Lead Re- 
finery at Grasselll. Ind. Address, 42 Broadway, 
New York City. N Y. 


Mines and Mills at Pachuca and Real del Monte. 
Address. Pachuca. Hidalgo, Mexico. 

For Examination and Purchase of Metal Mines. 
Address 55 Congress St.. Boston, Mass.; 42 Broad- 
way, New York, X. v.; W, P. story Bids., Los 
Angeles, Cal,; Newhouse Bids.. Salt Lake City, 
Utah; Ediflcio La Mutua 411, Mexico. D. F. 

42 Broadway. New York City, N. Y. 

Buyers of 


Refiner* of 


L. Vogelstein & Co. 



United States Metals Refining Co. 

Chrome, N. J., and Graselli. Ind. 



smelters at Caney, Kan., and Dearing, Ran. 


Smelter*, Refiners and Purchasers of 


Producers of Proof Gold and Silver lor Asaayers 

Attractive Terms Offered for 

Gold Silicious Ores 


332 Pine Street, San Francisco, Cal. 

Miller-Farish Company 

Buyers mid Refiners "t 

Gold and Silver Ores, Bullion, Etc. 

532 C< nercial Street 

Ban Francisco, Cal. Phone Sutter sio; 

The American Metal Company.Ltd. 


Branch Offices: 
St. Louis. Mo. Denver. Colo. 

1411 Third National Building 825 A. C. Foster Building 

Ores and Mattes Copper and Lead Bullion 

Mexican Representatives: Companla de Minerales y Metaies, 
Mexico City and Monterrey. 


Import Merchants. 






Stock* Carried. 

Buyers of Quicksilver and Platinum, also Ores of Antimony, 

Bismuth. Molybdenum. Tungsten. Vanadium. Zinc. etc. 

T'l » 

MININi. \\I) s> II M II I- I'KI SS 





Carbonates, Sulphides and Mixed Ores, Copper Ores, Copper Matte, 

Copper Bullion, Lead Bullion, Lead Ores, Antimony Ores, 

Iron and Manganese Ores. 


of Spelter, Antimony, Antimonial Lead, Arsenic, Zinc Dust. 

Own Smelting and Refining Works 

New York Office, 42 Broadway 

Sole Agents Minerals Separation American Syndicate, Ltd. 
Sole Agents National Zinc Company, Springfield, 111., and Bartlesville, Oklahoma. 

for Mines, Smelters, etc. 

Electric Mining Locomotives, 

Electric Cars 

Switches Frogs, and Equipment. 







'Let's See What the Merrell Will l>o' 

In 'iinirmriiiK and ennsiili'rinjE tin- rv- 

Bpective values of pipe tiimidinn: ma- 
chinery. nmk<- it ii rule lir-t to Bee what 

will do. 

This win be done bj putting the Merrell 
to work in your own shops and trying It 
oul under dailj working conditions for 
20 days. Then you know. 

if it does work easily, economically, 
quicklj and cuts absolutely accurate, 
clean, sharp threads, keep it— if not, 
return ii and yon art- notoul a penny. 

Catalogue B-8 tells all about the Merrell. 
Gel it now. Free. 

The Merrell Mfg. Co. 

10 Curtis St.. Toledo, Ohio 

Machines carried in stock in Ban Fran- 
cisco. Portland. Seattle, Denver 



is now prepared to receive for purchase all varieties of copper 

ores, and will be pleased to answer all enquiries for rates 

Address : ORE DEPARTMENT, Swansea, Ariz. 

Koppel Portable Tracks and Cars 

For Quickness and Economy in Handling Material 

Orenstein - Arthur Koppel Co. 

Los Angeles San Francisco 

120 S. Los Angeles St. Rialto Building 




uftrjMr) -Ovum 



ORIGINAL .no Sc\c M.xtns .-, t»c U. S. 

Mining Engineers' Examination and Report Book 

In Two Parts $2.50 Postpaid 

PART I is a handbook covering examination of ami r 'pnrting upon mines 
and mining property. Part II is a skeleton report, Berving threo pur- 
poses: First an outline of a model report; Second, a Held notebook; or 
Third, a blank form on which i lie final report may bo submitted. 

Published and for sale by the 
Mining and Sciknttfic Fkkss. 420 Market St., Sav Francisco 



January 3, 1914 



fl| This Dredging Scraper is particularly 
adapted for Placer Mining in localities 
where the operation of a regular Dredge 
would be too expensive — and for dredging 
small creeks and rivers. Made in any size 

Manufactured by 

Seattle Machine Works 

37 to 51 West Lander St., 



428 McAlltatcr St., San FrucUco 

Special work may be taken In Assaying. Cyanldlng. Metal- 
lurgy. Drafting. Surveying, and General Engineering. 
For Information address C. E. HKAI.D. Ahh't. Snpt. 


Established In 1867. 
12 months course In PRACTICAL ENGINEERING. 

Mining. Mechanical, Civil or Electrical. 
Send for catalogue. 


Located In the Lake Superior mining' district. Mines and 
mills accessible for college work. For Year Book and 
Booklet of Views, address President or Secretary, 
Houghton, Michigan. 


A department of the University of Missouri. Established 
In 1871. Four-year courses In Mining Engineering. Met- 
allurgy. Civil Engineering, General Science. 
L. E. Young. Director. Rolla. Missouri 


Department of Mining Engineering. Complete ore con- 
centration, coal washing, drilling and blasting labora- 
tories just completed. Fully equipped mine rescue sta- 
tlon. Address Dept. Mining Engineering, Urbana. Illinois. 


College of Mine*, Seattle, Washington. 

Coal and Metal Mining, Ore Dressing, Metallurgy. 
Special Courses for Mining Men. January to April, 


The shay locomotive is peculiarly adapted 
for mining service that combine heavy 
grades, sharp curves and temporary track. 



60 Church St.. New York 


The on* 1 p*oce Btick made in S. 1° 
and 12-inch lengths, 

2 •« 

2 ° 


_, n 

My Pocket Stick la the best thing 

errer offered In this line. Open, 10 inches. Weighs 7H ounces. Steel, polished. 

Strong, servicable. For descriptive folders and quantity prices address 

N. E. VARNEY, 1830 Lawrence St., Denver, Colo. 



Most extensive and successful 
manufacturers. Old plates re- 
plated — made equal to new. 

San Francisco Plating Works 

1349-51 Mission SI.. San Francises. 


Get our prices. catalog sent. 

Telephone Market 2916. 


=== BONDS =^=^= 
Members New York Stock Exchange 
490 California St. San Francisco 


Members New York Stock Exchange, New York Cotton 

Exchange, Chicago Board of Trade, 

The Stock and Bond Exchange, San Francisco. 

Main Otlice ... Mills Bldg.. San Francisco 

Branch Offices: 

Los Angeles. San Diego. Coronado, CaL Portland. Ore. 

Seattle, Wash. 

Private Wire, Chicago. New York. 

Janimrv '.i. l'.'ll 




»ll (rtxrkrr lulldlnf. Sao Fr*nciw-«. 
Established 1SC0 


\\r till) tu nil nlihi.ui rhargf, on mitn-ai. onr Handbook «■ 
Patrata, Trademark*, nd Copyrfskts, ruaiilaiag orer 10* 
r«l» of mrrbaalral niutrmrnii, 

Atnnn;/ th> flfltfifi rtomity obtained through Uf, Uu fol- 
lowing arr worthy of tpt ofai rut ntion : 

CUSHION TIRE FOB VKHI«'l.i:s.— Jamca Seadler. Tho 
<>f this Invention Is to provide a cushion tiro 
which shall b« particularly adapted for use on heavy freight- 
m| trucks of the motor driven type. 

WATER FLOW.— William F. Englebrlght. The object of the 
Invention is to provide an Improved meana whereby 
the volume of watt-r Mowing In a stream may be proportion- 
ately divided. imJ by passing the smaller portion through a 
meter ■ rending Is obtained whereby the total volume of 
•rater passing through the measuring apparatus during u 
given time Is ascertained. 

FLUSH-OUT VALVE.— Tosco & Sallna. It Is the object of 
this Invention to provide a flushing apparatus for water- 
closets which Is adapted to deliver the same amount of water 
upon every occasion and which operates to discharge a large 
flush at first to Insure flushing the water-closet bowl, and a 
small flush at the latt so as to properly All the bowl and 
seal the trap. 

SIGNAL APPARATUS. — Chester Williamson. It Is the ob- 
ject of this Invention to provide a signal apparatus which Is 
particularly adapted for use on electrically operated street- 
cars and trains, by means of which the passengers may sig- 
nal to the motorman and conductor the streets or stations at 
which they desire to stop, and which Is so constructed that 
the passenger may operate the signal at the moment of 
boarding the car. or at any time before the car reaches the 
desired destination. 

(Coplea of any of the above faralshed for 10 ceata each.) 


Tht ooti o/ adMrNitaf /i, r pasfMmi tmH4 U « mltptr word 

ptr insertion. Minimum or.trr to rrnu. Kr,.liri /„• u,„,lr.l u .IJioul 
• Jflrn cbtiri/r. Rrmuiimrr mint Mampoity orrfsr. 

< \ VMi'i. MILLMAN. uau , solution* nit«r». 

i , voung, 

1(0, Mining and 

itlAa Prcu. 

>mutor urn] concentrator man desires 

278, Mil. in; 

ojiumimAn, uiniiiKiimuior . 'r»L. 

• , ,' o Ku ""ywl'To; references. «■■ 

ntlflo Press. 

MINING ENGINEER, t..hnical graduate, ten yeara experi- 
ence In mining and ore-dressing h ... and 
Arizona. seeks position v will bo chance for advance- 
ment; is familiar with the derelopment ai un of 

opertles and tho details of mine management; l» nuullllcd to 


i"; " 

take charge of mines and as assistant to executive. Box 274. 
Mining and SclentlHc Press, atki.v avaii.aiu.k Technical graduate. SI years. 
Just out of Mexico, who can furnish excellent references from 
reliable sources regarding ability as mine foreman, chief sur- 
veyor or office man. Pox 272. Mining nnd SclentlHc Press. 

EXPERIENCED CYANIDE MAN. accustomed to handle large 
modern silver-gold mills. slImcH or winds treatment, I 
construction, operation or correction, open to engagement about 
January 1st. Box 268. Mining and Scientific Press. 

OPEN FOR ENGAGEMENT — Mining engineer. 12 years prac- 
tical experience: specialty, mining geology, examination work, 
prospecting: good references: German. Spanish. French ana 
Slavish spoken; foreign countries preferred. Box 247. Mining 
and SclentlHc Press. 




We supply skilled men in nil branches ol mining. Booklcei 
stenographers, surveyors, assayerB, engineers, mine detectives, 
mllimen, drangbtemeni amalgamators cyanide men, etc. No 
charge to employer. 


I make a. specialty of supplying MINERAL SPECIMENS 
AND COLLECTIONS for students, prospectors, and 
private cabinets. I buy specimens in all quantities. 

R. M. WILKE, Box 312, Palo Alto, Cal. 

Dividend Notice 

(The German Bank) 
B20 California Street. 

For the half year ending December 31, 1913, a dividend 
has been declared at the rate of four (4) per cent per annum 
on all deposits, payable on and after Friday, January 2, 1914. 
Dividends not called for are added to the deposit account 
and earn dividends from January 1, 1914. 



A practically new, electrically operated 5-foot dredge with 
close connected buckets. For particulars address 

THE CASTLE CREEK H. G. M. CO., 23 Evans Blk., Denver, Colo. 

AND QUICKSILVER. We buy precipitates, amalgam, fine 
and base bullion, scrap platinum, high grade gold and sliver 
ores and material containing the precious metals in any 
amount, form, or condition. Send details or sample and we 
will quote prices. 


210 San Frnnclnco St., EI Pano, Texan. 

Co., El Paso. 

First National Bank. Mine & Smelter Supply 


Owing to changes In its nmelter nnd mill equipment the 
Cona. Arizona Smelting Co., offer** for *nle at low prlceH the 
following mnehlnery, nil In good working eondltlon: 

4 — EdwardH Ronntern. '2. — «-ft. Huntington Hills. 

2— 25-ft. Hnacock JlgH. 1*1 — <J-ft. Frue \ nnmrs. 

S — Overstrom Tables. 8 — S-ft. Callow Tanks. 

1 — 7 x 10-ln. BInke Crusher. 
For terms, apply to 
CONS. ARIZONA SMELTING CO., Humboldt. Arizona. 

California Perforating 

Screen Company 

Manufacturers of perforated Sheet 
Metals of all kinds for Mining and 
Milling Machinery and other uses. 
-I Hi llnrrl-i.i. Street. San I rsi n. In CO. Cal- 

ffitmsrntt Srillmg (Utt. 






The great work of building the new West, 
you should have 

Western Engineering 

Sample Copy on Request 

Western Engineering Publishing Co. 

420 Market Street, San Francisco, California 



January 3, 1914 

Small Water Powers 

Replacing Small Turbines Everywhere 
I X L Steel Overshoot Water Wheels 

A few years ago most 
writers on hydraulics re- 
ferred to the overshoot as 
"obsolete" — rating it at 
about 60% efficiency. 

Small turbines were In 
order everywhere — yet you 
know that the average 
efficiency of the small tur- 
bine is less than 70%. at 
the wheel shaft. 

Steel Overshoot with 
Segment Gear. 

Today, the 

IXL Steel Overshoot Water Wheel 

is giving 89% Efficiency on 
the Jack Shaft 

— and nn efficiency of ©2'" at the wheel shaft. These are 
not "claims'* — they're test report** from the University 
of Wisconsin. 

We want to emphasise the fact that this Is NOT 
the old fashioned "m Bter*1 heel"— hot a modern, scientific 
unit cnpnble of getting highest efficiency from water a 
turbine can't handle. 

Bulletin No. 11 — If you want all the facts. 

F1TZ WATER WHEEL CO., Hanover, Pa., U.S.A. j 


( — ) Indicates Every Other Week or Monthly Advertisement. 

The Mining Magazine 

Published Monthly at Salisbury House, London, E. C, England 

T. A. R1CKARD, Editor 

EDGAR RICKARD, Managing Director 

A monthly review of world-wide min- 
ing written by men who know the in- 
dustry. Authoritative articles; reports 
of company meetings; live discussions; 
digested statistics; significant and read- 
able editorials. 


Subscription Price: 
United States and all countries except United 

Kingdom and Canada, $4 per year 

United Kingdom and Canada, - - $3 per year (12s.) 

Combined price with Mining and Scientific Press 

to new subscribers : 

U. S., Mexico and Canada, - - $6.00 

United Kingdom, - .- - - - 7.00 

Other countries in Postal Union, 8.00 

The Mining Magazine, Salisbury Boose. London, EC, or 

Mining and Scientific Press, 420 Market st.san Francisco 

Acetylene Lamps Page. 

Justrite Mfg. Co% 29 


Dorr Cyanide Machy. Co 57 

Traylor Eng. & Mfg. Co 8 9 

Am a learn atom 

L. S. Pierce 77 

Amalgamated Platen 

San Francisco Plating Works Effi 

Assayers' and Chemists' 

See page tt 

Aasnyers' and Chemists Sup- 

Braun Corporation, The '9 

Braun-Knecht-Heimann Co 69 

Denver Fire Clay Co 76 

Mine A Smelter Supply Co 38 89 

Balances and Weights 

Ainsworth A Sons Wm 88 

Braun Corporation, The 69 

Braun-Knecht-Heimann Co 69 

Denver Fire Clay Co 75 

Kohlbusch. Herman. Sr .88 

Mine A Smelter Supply Co S8 89 

Salt Lake Hardware Co 88 

Thompson Balance Co 89 

Troemner. Henry 88 

Dall Mills 

Allis-Chalmers Ml g Co 52 

Denver Engineering Works Co 39 

Hardinge Conical Mill Co SS 

Traylor Eng. A Mfg. Co 8 9 

Ball Mill Plates 

Chrome Steel Works « 

Barges, Steel 

American Bridge Co 97 


Dodge Mfg. Co SO 

Hyatt Bearing Co 48 

Meese A Gottfried Co Back Cover 


Diamond Rubber Co., The — 

Dodge Mfg. Co 30 

Fairbanks. Morse A Co 96 

Gandy Belting Co 9! 

Goodrich Co.. B. F if, 

Meese A Gottfried Co Back Cover 

Robins Conveving Belt Co 64 

Webster Mfg. Co 71 

Belts, Conveyor 

Diamond Rubber Co., The — 

Dodge Mfg. Co m 

Fairbanks, Morse A Co 9f> 

Gandy Belting Co 91 

Goodrich Co. B. F id 

Meese A Gottfried Co Back Cover 

Robins Conveying Belt Co 54 

Webster Mfg. Co 71 

Blasting Powder 

Du Pont de Nemours Powder Co. . . .72 

Trojan Powder Co 90 

B I oweri 

Allis-Chalmers Mfg Co 32 

Connersville Blower Co — 

.Denver Engineering Works Co 39 

General Electric Co. ..". 12 

Hendrie A BolthofT Mfg. A Sup. Co. 2 

Worthington. Henry R — 

Books ■ 

Mining and Scientific Press 59 

Trautwine Co 75 

Wiley A Sons. John 76 

Boots and Shoes 

Putman Boot A Shoe Co ...76 


AbendrothARootMfg. Co 21 

Allis-Chalmers Mfg. Co 52 

Denver Engineering Works Co 39 

Fairbanks. Morse A Co.- % 

Harron. Rickard & McCone BackCover 
Hendrie A Bolthoff Mfg. A Sup. Co. 2 

Hendy Iron Wits.. Joshua 49 

Power A Mining Machinery Co 93 

Union Iron Works Co 47 

Vulcan Iron Works 70 

Brick, Fire 

Atkins. Kroll A Co 80 

Braun Corporation, The 69 

Braun-KnechtHeimann Co B9 

Denver Fire Clay Co 75 

Harbison Walker Refractories Co. . .74 
Brick. Magnesia 
Harbison-Walker Refractories Co. . .71 
Brick. Silica 
Harbison- Walker Refractories Co. . .74 


American Bridge Co 97 

Brlquettlng Machinery 

Braun Corporation. The 69 

Braun-Knecht-Heimann Co 69 

Traylor Eng. A Mig Co 8 9 


Alli»-<jnalmers Co 52 

American Bridge Co 97 

Broderick A Bascom Rope Co. . . .42 43 

Brown Hoisting Machine Co 99 

Denver Engineering Works Co 89 

Dodge Mfg. Co :0 

Harron. Rickard & McCone Back Cover 
Hendrie A Bolthoff Mfg. A Sup. Co. 2 

Hendy Iron Wks.. Joshua 19 

Leschen A Sons Rope Co., A 6 7 

Meese A Gottfried Co Back Cover 

Robins Conveying Belt Co 54 

Watt Mining Car Wheel Co 77 

Wellman-Seaver-Morgan Co 10 11 


American Bridge Co 97 

Burners, Oil 

Braun Corporation, The 69 

Braun-Knecht-Heimann Co 69 

Denver Fire Clay Co 75 

Harron. Rickard & McCone BackCover 

Union Iron Works Co 47 

Cuhleways, Suspension 
Broderick A Bascom Rope Co. ... 42 43 

Flory Mfg. Co. S 78 

Leschen A Sons Rope Co., A 6 7 

Painter Tramway Co 74 

U.S. Steel Products Co 78 


Chalmers A Williams 94 

Denver Engineering Works Co 39 

Hendrie A Bolthoff Mfg. A Sup. Co.. 

Hendy Iron Wks.. Joshua 49 

Traylor Eng. A Mfg Co 8 

Union Iron Works Co 

Wellman-Seaver-Morgan Co 10 

Candle Sticks 

Lindahl Specialty Co 89 

Varney. N. E 82 

Carbons, Borts, and Diamond's 

Atkins. Kroll & Co 80 


Allis-Chalmers Mfg. Co £2 

American Bridge Co 97 

Atlas Car A Mfg. Co 81 

Denver Engineering Works Co 89 

Fairbanks. Morse A Co % 

Harron. Rickard AMcCone Back Covei 
Hendrie A Bolthoff Mfg. A Sup. Co. 2 

Hendy Iron Wks.. Joshua 49 

Mine A Smelter Supply Co 38 89 

' )rensteln-ArthnT Eoppel Co Q 

Pacific Foundry Co 45 

Traylor Eng. A Mfg. Co 8 9 

Mart Mining Car Wheel Co 77 

Wellman-Seaver-Morgan Co 10 11 


Abendroth A Root Mfg. Co ." . 21 

Allen American Manganese Steel 

Co., Edgar — 

Chester Steel Castings Co 74 

Chrome Steel Works 86 

Dodge Mfg. Co 30 

Lunk.nh.-imerCo 78 

Pacific Foundry Co 45 

Phosphor Bronze Smelting Co 81 

Scullin-Gallagher Iron A Steel Co. ..74 
Taylor- Wharton Iron A Steel Co. . . .74 

Van Winkle, H. L 74 

Yuba Construction Co 37 


Dodge Mfg. Co 30 

Fairbanks. Morse A Co 96 

Harron. Rickard A McCone BackCover 

Meese A Gottfried Co Back Cover 

Robins Conveying Belt Co 54 

Taylor-Wharton Iron A Steel Co.... 74 

Webster Mfg. Co 71 


Atkins. Kroll A Co 90 

Braun Corporation. The 69 

Braun-Knecht-Heimann Co 69 

Denver Fire Clay Co 75 

Dodge Mfg. Co 30 

Mine A Smelter Supply Co 38 89 

Roessler A Hasslacher Chemical Co. .22 
See page tt 
Chilean Mills 

Allis-Chalmers Mfg. Co 52 

Chalmers A Williams 91 

Lane Mill A Machinery Co 77 

Power A Mining Machinery Co. ... 93 
Traylor Eng. A Mfg. Co 8 9 

Jaiuuir.v !. l'.'H 




1 Iwllrn 

... S 

1 lulck.*. Krlrfloa 

ralrhar,*- v' 


Hack (V.T«r 
Wallman vi» r rM«>r|in Co 

(Ml iUKrn 

v Mfg.Co *2 

Riad «'.. A 


Pnw<rrA Miiiihi Machinery Oo 

Wulhvan (V% 

Coal lInndllnK "ridge* 

American Brl.lge 00 9? 

ON] Handling; Machinery 

Barthtt A BbOV r.v.r.O 79 

U-ljT' Mfg. OO TO 

Fatrhanki, Mor»-Al'o. 96 

(omprnton, I Ir 

■JUfrCtalman lift. Oo M 

OUmnA wnUajnj 91 

Chicago Pn-umatic Tool Co 71 

Clayton Air Oompraaion Works — 

iVnv-T Kngin-Ting Works Oo 89 

lairbanks. Uora kC % 

General EMnn.- • H 

H»rMn. Rickard A ICoOOfW BackCover 
HendrleA B.>lth.iiT Mfg. A Sup. Co.. 2 

Hendy Iron Wk.«..Jo«hua 4*.» 

Ingeranll-Rand 0& 5 

LaXllaw-IhinrUJonli'ti Co i»2 

McKi-nmn-T.Tr>- DltU Co 72 

Nordberg Mfg. <o 4 

Sullivan Machinery Co 55 

Union Iron Works Co 47 

Vulcan h-on Works 70 

Worthingtnn. Henry R — 

< onccntrnfor Bella 

Diamond Rubber Co — 

Goodrich Co.. B. F 16 


AUlB-Chalmcrti Ml*. Co 52 

Chalmers A Williams '.<i 

Delator Con<'.'iit rat. ->r Co BO 

DObtST Mil- -h: ii" CO 3 

DtabTt CO.. I. ■'.... .76 

Hendrie A B^tthofT Mfg. A Sup. Co... 2 

Heri-ty IrOO WkS.JoahOa 49 

Mill-.- A -m-lt.-r supply Co 38 89 

Power A Mining Machinery Co 93 

Traylor En*- A Mfg. Co 8,9 

Union Iron Works Co 47 

Concrete Mlxera 

Fairl>anks. Mors© A Co 96 

Ham .n. Rickard A McCone, BackCover 

Power A Mining Machinery Co 93 

Condense rn 

Alberger Pump Co... 20 

Allis-Chalmers Mfg. Co ij 

Blake A Knowles steam Pump Wks. 
Cameron Steam Pump Works. A. 9. ..31 

Connersville Blower Co — 

Power Specialty Co 74 

Prescott Steam Pump Co.. Fred. M... 73 

Worth ington. Henry R — 

Contract, Drilling 

Ltnscott Drilling Co 89 

Conveyor*. Belt 

AJlis-Chalmers Mfg. n n 32 

Blake a Knowles steam Pump Wks.— 

Dodge Mfg. Co 30 

Meese A Gottfried Co Back Cover 

Robins Convoying Belt Co 54 

Vulcan Iron Works 70 

Webster Mfg. Co 71 

Conveyor*. Screw 

Dodge Mfg. Co 30 

Meese A Gottfried Co Back Cover 

Webster Mfg. Co 71 

Cooler*. AJr 

Power Specialty Co 71 


Allis-Chalmers Mfg. Co 52 

Hendrie ABolthoff Mfg.A Sup. Co... 2 

Pacific Foundry Co 45 

Power A Mining Machinery Co 93 

Union Iron Works Co 47 

Traylor Eng. A Mfg. Co 8,9 

Copper, Sheet 

Pacific Metal Wka 77 

Coupling*, Hose 

Mulconroy Co., Inc 77 


Brown Hoisting Machinery Co 99 

Wellman-Seaver-Morgan Co 10 11 


Braun Corporation Co.. The 69 


Braun Kti.-vM II el man i 


< ruahera 

aJUsGhainan Mfg. Co M 


Hraim K ft* 

Chatnwr 9i 




Hamm. Rickard A McCoiM HackOorer 
ll.-n.ine A ll.»lih..ffMfg. A Sip. Co... 2 
Bend] Iron Wki loahua 19 

IVw.-rA Mining IfaChlDOr] Co 98 

TrayL.r Eng. A Mfg. Co 8.9 

Onion in >n Work-. 00 *7 

Vulcan Iron Work* 70 

» upela 

Hrmun lorporatlon. The 69 

BraunKnevht-Heiinann Co •■> 

Dnrrv FhrtCaay Oo 75 

Mini' A Smaltar supply Oo... 

Cyanide l*lant* ■nd Machinery 

ANmdroth A R.*.t Mfg. Co 21 

AUia-Chalmors Mfg. Co S3 

Blaindell Co — 

Duttsn Patent Vacuuin Filter Co. ..71 

Chalmers A Williams 91 

Denver Engineering Works Co 19 

Dorr Cyan id- Machinery Co 67 

Hammond Iron Works 87 

H.'iidne A BOlthOfl Mfg. A Sup.Co... 2 

Hendy Inm WkM. Joshua 49 

Kelly FlUor Press Co 93 

Meese A Gottfried Co Back Cover 

Merrill Metallurgical Co. . Front Cover 

Mine A Smelter supply Co 88 **9 

Ottrari EOnJdnooai Filter Co 56 

Pacific Tank A Pipe Co *« 

Perrin A Co.. Wm. R 74 

Power A Mining Machinery Co 93 

Redwood Mfrs. Co 73 

Traylor Eng. A Mfg. Co 8. 9 


Blaisdell Co — 

Dorr Cyanide Machinery Co 57 


Blaisdell Co — 

Drafting Material 

Ainsworth A sons. William 88 

Buff A Buff Mfg. Co M 

Liefcs Co.. A.. The 89 


Bucyrus Company 97 

Marion Steam Shovel Co 23 

New York Engineering Co 82 

Union Construction Co 18 

Union Iron Works Co 47 

Yuba Construction Co 87 

Dredging Machinery 

Abendroth A Root Mfg. Co 21 

Allen American Manganese Steel 

Co.. Edgar — 

American Locomotive Co 70 

Bucyrus Company '.'7 

Hendrie ABolthoff Mfg. A Sup. Co... 2 

Marlon Steam Shovel Co 28 

New York EngineeringCo 32 

Robins Conveying Belt Co 54 

Seattle Machine Works 82 

TaylorWharton Steel A Iron Co 74 

Union Construction Co is 

Union Iron Works Co 47 

Wellman-Seaver-Morgan Co 10 11 

Yuba Construction Co 37 

Drill Maker* and Sharpeners 

Ingersoll-Rand Co 6 

Proske. T. H 33 

Drilling, Contract 

Linscott Drilling Co 83 

Drill*. Air and Steam 

Chicago Pneumatic Tool Co 72 

Cleveland Rock Drill Co 3 

Demurest Co., D. D 17 

Harron, Rickard A McCone BackCover 
Hendrie ABolthoff Mfg. A Sup. Co... 2 

Ingersoll-Rand Co 5 

McKiernan-Terry Drill Co 72 

Mine A Smelter Supply Co 38 89 

Kix it.inprvssed Air Machy. Co 71 

Sullivan Machinery Co 55 

Wood Drill Works 85 

Drills, Core 

Ingersoll-Rand Co 6 

McKiernan-Terry Drill Co 72 

Standard Diamond Drill Co 74 

Sullivan Machinery Co 55 

Drill*. Electric 

Harron. Rickard A McCone BackCover 

Ingersoll-Rand Co 5 

Drill*, Prospecting 

Harron. Rickard A McCone BackCover 

nni lurk Irtlls 

You can get more work in a day out of a 
Wood Rock Drill than you can out of any other 
make, because it stands up to the work and 
can be driven hard all the time. You don't 
have to humor it. It is made for hard work 
and has a record for achievement under adverse 
conditions that is unequaled. 

One reason for the exceptional strength and 
durability of Wood Drms is, that head, cylin- 
der and chest are made of Vanadium Tungsten 
Iron instead of the usual grey iron. When 
you consider that this Vanadium iron is from 
two to three times as strong as ordinary grey 
iron, you can see what a tremendous difference 
in the life and service of a drill is made by 
the change. 

This is only one of the good features 
of the "Wood Drill. Ask for our cata- 
log and learn about the rest. 

30 Dale Ave., Patersoi,, N. J. 

Continued on Next Page. 



January 3, 1914 






Chrome Steel 



Stamp Mill Wearing Parts 

Shoes and Dies (Hydraulic Forged) 

Canda Self-locking Cams 

Tappets : Bossheads 

Canda Patent Cam 

CANDA CAMS are easily adjusted to 

the ordinary cam shaft. 
All cams interchangeable on the same 

Absolutely self-locking — will never work 

Over 10,000 Canda Self-Locking Cams 

now [in service. 

Send for pamphlet "Adamantine 
Chrome Steel Stamp Mill Parts" 

"Adamantine" is our registered Trade Mark. 
To avoid substitution order by that name. 


J. F. SPELLMAN, First Nat'l Bank Bldg., DENVER, COLe. 



Ingersoll-Rand Co 5 

Keystone Placer Drill Co 77 

McKiernan-Terry Drill Co "2 

Linscott Prilling Co 89 

New York Engineering Co 82 

Mar Drilling Machine Co 79 

standard Diamond Drill Co '• 

Sullivan Machinery Ca% 66 


DnPontdeNemoon Powder Co., B.I.72 

Trojan Powder Co 90 


Allis-Chalmers Mfg. Co 52 

Denver Engineering Works Co 39 

Fairbanks. Horse A Co '.'6 

General Electric Co 12 

Hendrie A Bnlthnff Mfg. A Sup. Co... 2 

Western Electric Co 91 

Westinghouse Electric A Mfg. Co....— 
Electric Smelting 

Continuous Zinc Furnace Co 95 

Mnulin'N. Gas and Gasoline 

Allis-Chilmers Mfg. Co 52 

Denver Engineering Works Co 89 

Fairbanks. Mors*- d Co it; 

Hendrie & Boltlioff Mfg. & Sup. Co... 2 

Hendy Iron Wks., Joshua 49 

POWBT & Mining Machinery Co 98 

Engines, Oil 

Fairbanks, Morse A Co 96 

Snow Steam Pump Works — 

Englnea, Stenm 

Allis-Chalmers Mfg. Co 52 

Blake A: Knowjes Steam Pump Wks.— 

Denver Engineering Works Co 39 

Fairbanks. Morse & Co % 

Harron. Rickard A McCone BackCover 

Hendy Iron Wks .Joshua 19 

Nord berg Mfg. Co. .TV i 

Traylor Eng. A Mfg. Co '.k 9 

Onion Iron Works Co i? 

Vule»n D/pn Works 70 

Well nian-Sea ver-Morgan Co 37 

Excavating Machinery 

BlaisdeM Co _ 

Brown Hoisting Machinery Co... . 99 
Sauerman Bros <»i 

Fans, Ventilating 

allis-Chalnaerfl Mfg. Co 52 

Fairbanks, Morse A Co <ifi 

General Electric Co 12 

Harron. Kickard A McCone BackCover 
Hendrie A BolthofT Mfg. A Sup. Co... 2 

Sullivan Machinery Co 66 

Vulcan Iron Works .70 

Filter Preaaes 

Kelly Filter Press Co 93 

Mi mil M'-tulhirgicalCo..Front'Cover 

Perrin A Co.. Wm. R 74 

Traylor Eng. A Mfg. Co .8, 9 


Blaisdell Co. . The _ 

Butters Patent Vacuum Filter Co'.'"71 

Chalmers A Williams 94 

Oliver Continuous Filter Co... . 56 

Traylor Eng. A Mfg. Co 8 9 

Fire Brick 

Atkins Kroll A Co go 

Braun Corporation Co 1 9 

Braun-Knecht-Heimann Co 6') 

Denver Fire Clay Co 75 

Harbison-Walker Refractories Co. "74 
Fitting*. Malleable and 
Cant Iron 

National Tube Co se 


American Spiral Pipe Works 2? 

Lunkenheimer Co ' "7s 

National Tube Co .""L"!"86 

Foundry Equipment 
Connersville Blower Co. . — 

Ingersoll-Rand Co 5 

Pacific Foundry Co 45 

Scullin-Gallagher Iron A Steel Co! "74 

Sullivan Machinery Co 55 

Wellman -Sea ver-Morgan Co . " 10 11 

Froga and Switches 

Fairbanks. Morse A Co 95 

Johns-HanviUe Co.. H. w. 91 

D". 8, Steel Products Co.... "78 

Watt Mining Car Wheel Co ...77 

Furnncea, Aasay 

Braun Corporation. The f 1 

Braun-Knecht-Heimann Co '. "fi5 

Denver Fire Clay Co 75 

Mine A Smelter Supply Co 38 89 

Furnacea, Roasting 

Allis-Chalmers Mfg. Co 32 

Hendrie A BolthofT Mfg. A Sup. Co. 2 

Pacific Foundry Co 45 

Power A Mining Machinery Co 93 

Traylor Eng. A Mfg. Co 8 9 

Wedge Mechanical Furnace Co 25 

Furnacea, Smelting 

Allis Chalmers Mfg. Co 52 

Hendrie A BolthofT Mfg. A Sup. Co. . 2 


Pacific Foundry Co 45 

Power A Mining Machinery Co 93 

Traylor Eng. A Mfg. Co 8, 9 

Wedge Mechanical Furnace Co 25 

Gas Prodacera 

Power A Mining Machinery Co 98 

■Wellman-Sea ver-Morgan Co 10 11 


American Spiral Pipe Works 28 

Diamond Rubber Co — 

Jnhns-Manville Co.. H. W 91 

National Tube Co 36 

8mooth-On Mfg. Co 75 


Dodge Mfg. Co 30 

General Electric Co 12 

Meese A Gottfried Co Back Cover 

Pacific Gear A Tool Co 31 


Allis-Chalmers Mfg. Co 52 

Denver Engineering Works Co 39 

Fairbanks. Morse A Co % 

General Electric Co 12 

Hendrie A BolthofT Mfg. A Sup. Co.. . 2 

Western Electric Co 91 

Westinghouse Electric A Mfg. Co. . . .— 
Giants, Hydraulic 
See Hydraulic Mining Machinery 
Graphite Products 

Dixon Crucible Co-. Joseph 77 

Heatera, Feed Water 

Alberger Pump Co 20 

Allis-Chalmers Mfg. Co 52 

Blake A Knowles Steam Pump Wks.- 

Dodge Mfg. Co 30 

Fairbanks. Morse A Co 96 

Hendrie A BolthofT Mfg. A Sup. Co... 2 

Power Specialty Co 74 

Union Iron Works Co 17 

Holata, Air 

Mine & Smelter Supply Co 3S 89 

Holata, Electric 

Allis-Chalmers Mfg. Co 52 

Brown Hoisting Machinery Co- 99 

Denver Engineering Works Co 39 

Fairbanks. Morse A Co 9$ 

Flory Mfg. Co.. 8 76 

General Electric Co 12 

Harron Rickard A McCone RackCover 
Hendrie A BolthofT Mfg'A Sup. Co... 2 

Hendy Iron Wks. Joshua 49 

Lidgerwood Mfg. Co 44 

NordbergMfg. Co 4 

Power A Mining Machinery Co 93 

Sullivan Machinery Co 55 

Union Iron Works Co 47 

Vulcan Iron Works 70 

Wellman-Sea ver-Morgan Co 10 11 

Westinghouse Electric A Mfg. Co.. . . — 
Hoists, Steam 

Allis-Chalmers Mfg. Co 52 

Brown Hoisting Machinery Co 99 

Denver Engineering Works Co 39 

Fairbanks. Morse A Co 96 

Flory Mfg. Co.. S 76 

Harron. Rickard A McCone BackCover 
Hendrie A BolthofT Mfg. A Sup. Co... 2 

Hendy Iron Wks. Joshua 49 

Lidgerwood Mfg. Co , 41 

Nordberg Mfg. Co 4 

Power A Mining Machinery Co 93 

Sullivan Machinery Co 66 

Vulcan Iron Works 70 

Union Iron Works Co 47 

Wellman-Seaver-Morgan Co 10 11 


Diamond Rubber Co.. The — 

Fairbanks. Morse A Co 96 

Goodrich Co.. B. F 46 

Ingersoll-Rand Co 5 

Johns-Man ville Co.. H. W 91 

Hydraulic Mining Machinery 

Abendroth A Root Mfg. Co 21 

American Spiral Pipe Works 28 

Hendy Iron Wks, Joshua 49 

Pelton Water Wheel Co 79 

Union Iron Works Co 47 


Lunkenheimer Co 78 

Powell Co.. William 16 

Iron Cements 

Smooth-On Mfg. Co 75 

Jnvr Plates 

Allen American Manganese Steel 

Co.. Edgar — 

Chester Steel Castings Co 74 

Chrome Steel Works 86 

Scullin-Gallagher Iron A Steel Co... 74 
Taylor-Wharton IronA Steel Co. ...71 

Van Winkle. H. L 7* 

Laboratory Supplies 

See Assayers" and Chemists' 

Lamps, Arc and Incandescent 

General Electric Co 12 

Westers Electric Co. ;tl 

Westinghouse Electric A Mfg. Co. ... — 

Januun 8, 1914 



I iini|i». \.-.-t » l.ln- 

Jiuiritr M 

I . ...I 1.1... I'l|.r 

National Tuh« *<■ M 

I ... , . *. I Irrlrlr 

Allufftr A Mf» Qo M 

BaMwin Looomoam Works. The ...70 

General 12 

A Mfg. Co — — 

I.OfOmollvra, tiaaollae 

Baldwin Work* Ml 

vuUitn Iran Wccfta "o 

l.ocomutlv «-». St ram 

American Looomattra Oo "<» 

Bal'lwm LOOOIDOliT" Work*. The... To 
Lima Looomotlvfl Corporation...... Ett 

Vulcan Iron Works 70 


Albany Lubricating Co 79 

- 11- Ailam 79 

Dixon Cruel bk» Co., Joseph 77 


Albany Lubricating Co "9 

Sons. Atlam 79 

Dodge M I g . < o 80 

LunktMilit:ni-r Co 7S 

Powell Co. Wm U 


Atkins. Kroll A Co BO 

Miiunellc Separators 

American Zinc Ore Separating Co.. .76 

Matte Tapping Cara 

Pacific Foundry Co 45 

Metal. Bearing 

Phosphor Bronze Smelting Co 81 

Metal Duyera aod Dealers 

American Metal Co.. The 80 

Atkins. Kroll & Co 30 

■ mlheimer it Co 81 

Consolidated Mining «fc Smelting 

Co.. of Canada. Ltd 80 

International Smelting i Rfg. Co... .6 

Mountain Copper Co 80 

Bolby Smelting A Lead Co SO 

BwaoSM Cons. G. «fc C. Mining Co...M 
C. B. Smelting, Ref. <k Mining Co.... so 

Vogelsteln A Co..L so 

Wildtvrg Bros 80 

Mllla. Ball and Pebble 

AUis-Chalmers Mfg. Co 52 

Denver Engineering Works Co 89 

Hardlnge Conical Mill Co 58 

Traylor Eng. <fc Mfg. Co 8 9 

Mllla, Chilean 

Allis-Chalmers Mfg. Co 52 

Lane Mill <k Machinery Co 77 

Power A Mining Machinery Co 93 

Traylor Eng. & Mfg. Co 8, 9 

Union Iron Works Co 17 

Mineral Specimen* 

WUke. R. M 83 


Allis-Chalmers Mfg. Co 52 

Denver Engineering Works Co 39 

Fairbanks. Morse & Co 96 

General Electric Co 12 

Hendrie&BolthoffMfg.&Sup.Co... 2 

Hendy Iron Wks Joshua 49 

Mine <fc Smelter Supply Co 38. 89 

Western Electric Co 91 

Westinghouse Electric & Mfg. Co. ..— 
Motor Trucks 

Moreland Motor Truck Co 19 

Nails. Phosphor Bronze 

Phosphor Bronze Smelting Co 81 

Oil and Grease Cops 

Albany Lubricating Co 79 

Cook's Sons. Adam 79 

Lunkenheimer Co 78 

Powell & Co.. Wm 16 

Oil Well Supplies 

American Well Works 27 

Diamond Rubber Co — 

Broderick & Bascom Rope Co. . 42, 43 
HaiTon, Rickard & McCone BackCover 

Hendy Iron Wks. Joshua 49 

Keystone Placer Drill Co 77 

National Tube Co 36 

Star Drilling Machine Co 79 

Union Iron Works Co 47 

U. S. Steel Products Co 78 

Ore Bayers 

See Metal Buyers and Dealers 

Also see page to 

Ore Docks 

American Bridge Co 97 


Diamond Rubber Co — 

Johns-ManviUe Co., H. W 91 


Blake, Moffiit <fe Towne 71 

Patf-iil *lto 


tonai A *■"*» *o. as 


AUin.-Kn>ll \ ■ , 
Perforated Mrlala 

Alh»rhatiu-m M( r Oo b'i 

California Perforating 

ssytaf VMn- Do SA 

Phosphor llronsc 

I Bnxnmj Smelting Co 91 

Plpt- Covering 

Johns-Man v ill.* Co.. a. w BJ 

Plpr. Itltrti-d 

At- A BoOl Mfg. 00 J1 

American Spiral Pipe Work* 28 

■■ ■■ . 

Montague <& Co., W. W 10 

Plsr. Wood 

Pacific Tank A PlpeOo, 

Redwood Manufactun-ra Oo 7:i 

Pipe, Slerl 

National Tubo Co B6 

Plpi- Threading Mnchloea 

stenU M fg. GO 81 

Powder, Blasting 

Pnpnnt d.'N.moursPowderCo.. E.I. 72 

Xrojan Powder Co BO 

Produeer, Gns 

Power i Mining Machinery Co 93 

Well ma n-Seaver- Morgan Co 10, 11 

Pulleys, Shafting nnd Hnneers 

Denver Engineering Works Co 39 

Dodge Mfg. Co 30 

Fairbanks. Morse A Co 90 

Harron. Rickard A McCone BackCover 

Hendy Iron Wks. Joshua i'j 

Keen A Gottfried Co BackCover 

Robins Conveying Belt Co 54 

Welt man-Sea ver- Morgan Co 10, 11 


AlHs-Ch aimers Mfg. Co 52 

Braun Corporation. The 69 

Braun-Knrcht-Heimann Co 69 

Chalmers & Williams 91 

Denver Engineering Works Co 39 

Denver Fire Clay Co 75 

Denver Quartz Mill A Crusher Co. ..71 

Hardinge Conical Mill Co 68 

Hendy Iron Wks, Joshua 49 

Johnson Engineering Works 71 

Mine & Smelter Supply Co 3S, 89 

Power & Mining Machinery Co 93 

Traylor Eng. & Mfg. Co 8, 9 

Wellman-Seaver-Morgan Co 10. 11 


Alberger Pump Co 20 

Allis-Chalmers Mfg Co 52 

American Well Works 27 

Cameron Steam Pump Works. A. S. . .34 

Connersville Blower Co — 

Deane Steam Pump Co — 

Demarest Co., D. D 17 

Deming Co., The 74 

Denver Engineering Works Co 39 

Fairbanks, Morse & Co 96 

Frenier & Son 74 

General Electric Co 12 

Harron. Rickard & McCone BackCover 
Hendrie&BolthofTMfg.&Sup. Co... 2 

Hendy Iron Wks. Joshua 19 

Jackson Iron Works, Byron 76 

Jeanesville Iron Works Co 78 

Keystone Placer Drill Co 77 

Krogh Pump Manufacturing Co — 

Meese & Gottfried Co Back Cover 

Mine & Smelter Supply Co 38. 89 

Prescott Steam Pump Co.. Fred M.. .73 

Taylor Foundry & Eng. Co 99 

Union Iron Works Co 47 

Yuba Construction Co 37 


Atkins. Kroll & Co 80 

Braun -Knecht- He imann Co 69 

Mine & Smelter Supply Co 38, 89 

Railway Supplies and Equip- 

American Locomotive Co 70 

Atlas Car & Mfg. Co 81 

Baldwin Locomotive Wks., The 70 

Fairbanks, Morse & Co 96 

Lima Locomotive Corporation 82 

Oren stein-Arthur Koppel Co 81 

U. S. Steel Products Co 78 

Watt Mining Car Wheel Co 77 

Rings and Dies 
See Jaw Plates. 
Rock Houses 

American Bridge Co 97 

Rolls, Crushing 

Allis-Chalmers Mfg. Co 52 

Bacon. Earie C 81 

Chalmers & Williams 94 

Denver Engineering Works Co 39 

Hendrie «fc Bolthoff Mfg. & Sup. Co.. . 2 

Continued on Next Page. 




Cyanide and Storage Tanks 

Zinc Boxes — Thickener Tanks 

"Paterson" Hyd. Agitation Tanks 

Complete Oil Refineries 

Hammond Iron Works 

WARREN. PA., U. S. A. 

New York Office: 2630 Whitehall BdR., 17 Battery Place. 

Sole Owners for the Paterson Tank In the United States, 

Canada and Mexico. 

Sole Agents for the Paterson Tank In Mexico. 

We make a Specialty of 

Fine Engravings for Machinery Catalogs 
Our Artists are Experts on 

Mechanical Retouching 
California Photo Engraving Co. 

Engravers :: Artists 
121 Second Street San Francisco 



January 3. 1914 


Is another requisite of a 
flrBt-cIaes balance. The 


ls_ the raoet speedy as 
well aB the roost accu- 
rate balance made. 


one "aria" you_* III agree 
that_thl8 is the best bal- 
ance In the world. 

"Write lor raised discount!. 1 



Gold Medal Award ■( St. Lonia 

1840 s ^ e d ^°hc° e f 1904 


Trailer's Improved 
No. 3 Assay Balance 

7- . iach Be&m. SewAiUly J i ,.„., Hf. 

Full, clear sweep across beam. 
no obstructions. Fall away beam 
and pun arrests. The most 
popular ami efficient Avay Balance. Alt agate bearings and edges. 

List Price, $95.00* Price List on Application. 




Jamaica Plain Station. - BOSTON. MASS. 

A. B. FULLER, Seattle, Agent for Northwest 

The "Bull" ii the mull of 50 year, of iinrumcnt iludy by our 
Mr. Ceo. L. Buff —our prei.ot manager. Send fcr Ca'alogue 3 1 . 




Fine Balances and Weights 

For every purpose where accuracy is required. 




• arsons 


U.S.A. • 

Cary Spring Works 

240-242 W. 29th St. 


of Every Description. 

Tempered and Ud tempered. 



Hendy Iron Wks. Joshua 49 

I-an- Mill A Machinery Co 77 

Power .v Mining Machinery Co 93 

Taylor-Wharton Iron A Steel Co. ...74 
Traylor Em*. A Mfg. Co 8. 9 

Roof Trusses 

American Bridge Co* 97 


Johns-ManvilleCo.. H. W 91 

Rope, Manila and Jute 
Broderick & Bascom Rope Co. 41". 43 

Dodge Mfg. Co 80 

Leschen A Sons. Rope Co., A 6, 7 

Meese A Gottfried Co Back Cover 

Rope, Wire 

Brodexick A Bascom Rope Co... 42, 43 

I>-l Rl .Mfg Co 80 

A Sons Cope Co., A 6,7 

liing Co *U 

Boblnfl Conveying Belt Co M 

RoeblingSonsCo . John A 18 

U. S. Steel Products Co 78 


Broun Corporation. The 1*9 

Braun-Knecht-n-'imann Co 69 

Engineering Works Co :.9 

Denver Fin.- clay Co "5 

Mine a Smelter Supply Co 38. 89 

Traylor Eng. A Mfg. Co B, D 

Saw >1 ill Machinery 

Denver Engineering Works Co 39 

Hendy Iron Wks. Joshua 19 

Schools and Colleges 

Heald's School of Mines 82 

Van der Naillcn School, A . . 82 


Allis-Chalmers Mfg. Co 63 

California Perforating Screen Co... 1*3 

Chalmers A Williams 91 

Denver Engineering Works Co 39 

Lndlow-Saylor Wire Co 35 

Meese A Gottfried Co Back Cover 

Power* Mining Machinery Co 93 

Traylor Eng. & Mfg. Co..., 8, g 


American Zinc Ore Separating Co... 76 


See Pulleys, Shafting and 

Broderick A Bascom Rope Co.... 42, 18 

Dodge Mfg. Co 30 

a Rope Co., A B 7 

M. ■•■•■•■ a Gottfrifii to Back Cover 

Robins Conveying Belt Co H 

Wellman-Seaver-HorganCo 10, 11 

Shelln und Itlugn 
See Jaw Plates. 
Shoes and Dies 

Chrome Steel Works B6 

Scullin-Callagher Iron A Steel Co. ..74 

Union Iron Works Co 47 

Shove 1m, Electric and Stcum 

American LocomotiveCo 70 

Brown Hoisting Machinery Co 99 

Bncynu i ,1 97 

Marion Steam Shovel Co 23 

Si lex 

Atkins. Kroll A Co 80 

Smelters and Refiners 

Beer. Sondheimer A Co 81 

Consolidated Smelting A Rfg. Co., 

of Canada, Ltd 80 

International Smelting A Ref. Co... 26 

Selby Smelting <t Lead Co 80 

U. S. Smelting, Ref. A Mining Co.... 80 

Vogelstein & Co.. L 80 

Smelting Machinery 

Allis-Chalmers Mfg. Co 52 

Continuous Zinc Furnace Co 95 

Hendrie A Bolthoff Mfg. A Sup. Co. . 2 

Pacific Foundry Co 45 

Power A Mining Machinery Co 93 

Union Iron Works Co 47 

Traylor Eng. A Mfg. Co 8 9 

Wedge Mechanical Furnace Co 25 


Cary Spring Works 88 

Mump Mills 

Allis-Chalmers Mfg. Co 52 

Chalmers A Williams 41 

Denver Engineering Works Co 39 

Fairbanks, Morse A Co 90 

Hendrie A Bolthoff Mfg. A Sup. Co.. 2 

Hendy Iron Wks. Joshua 19 

Nordberg Mfg. Co 4 

Power A Mining Machinery Co 93 

Taylor Foundry A Eng. Co 99 

Traylor Eng. A Mfg. ( o 8 9 

Union Iron Works Co 47 

WrlLmaii-SeaverMorgan Co 10 11 

Stump Stems and Guides 
Chrome Steel Works 86 

Steel, Chrome 

Chrome Steel Works ^6 

Steel, Drill 

Harron. Rickard A McConeBackCover 

Steel, Manganese 

Allen American Manganese Steel 

Co , Edgar 71 

Chester steel Castings Co 71 

Taylor- Wharton Iron A Steel Co 74 

Van Winkle. H. L 74 

Steel, Structural 

American Bridge Co S>7 

Suction Dredges 

Yuba Construction Co 37 


Power Specialty Co 74 

'Clinks. Cyanide 

Abendroth A Root Mfg. Co 21 

Hammond Iron Works B7 

National Tube Co ! t> 

i'acihe Tank A Pi^e Co 

Power A Mining Machinery Co *JS 

Redwood Mi'rs. to 73 

Traylor Eng. A Mfg. Co 8 9 

Tapes, Measuring 

Lufkin Rule Co 96 

Telephones, Mine 

Western Electric Co 91 

Thickeners, Slime 

Dorr Cyanide Machinery Co 57 

Traylor Eng. A Mig. Co 8 9 

Tramways, Aerial 

Broderick A Bascom Rope Co 42 48 

Leschen A Sons Kope Co., A tj 7 

Painter Tramway Co 7 4 

Riblet Tramway Co 7i 

Roebling's Sons Co.. John A J3 

D. S. Steel Products Co 7s 


Ainsworth A Sons. William 88 

Batisch A Lomb Optical Co >9 

Bull A Buff Mig. Co 88 

LietzCo. A. The M 

Transmission Machinery 

Denver Engineering Works Co 39 

Dodge Mfg. Co 

Fairbanks. Morse A Co Lti 

General Electric Co 12 

Harron, Rickard A McCone Backi over 

Hendy Iron Wks., Joshua 19 

Meese A Gottfried Co Back Cover 

Robins Conveying Belt Co 64 

Taylor-Wharton Iron A Steel Co 74 

Tube Mills 

Allis-Chalmers Mfg. Co 52 

Chalmers A Williams 94 

Denver Engineering work- Co 89 

Haxdinge Conical Mill Co 5S 

Power A Mining Machinery Co 93 

Traylor Eng. A Mfg, Co 6 9 

Union Iron Works Co 47 


National Tube Co 06 

Turbines, Hydraulic 

Allis-Chalmers Mfg. Co 52 

Pitt Water w heel Co - 1 

Hendy Iron Wks.. Joshua 19 

Pelton Water Wheel Co .9 

Wellman-Seaver-M organ Co 10 11 

Turbines, Steam 

Alberger Pump Co 20 

Allis-Chalmers Mfg. Co 52 

General Electric Co 12 


Lunkenhelmer Co 78 

National Tube Co 36 


Connersviile Blower Co — 

Lunkenheimer Co 78 

National Tube Co 36 

Pelton Water Wheel Co 59 

Powell Co.. Wm 16 

Water Wheels 

Dodge Mfg. Co 30 

Fitz Water Wheel Co 84 

Pelton Water Wheel Co 79 

Union Iron Works Co 47 

Wellman-Seaver-Morgan Co 10 11 

Waterproof Coating 

Johns-Manville Co , H. W 91 

Smooth-On Mfg. Co 75 

Mater Softeners 

Dodge Mfg. Co 30 

Weighing Machines 

Conveying Weigher Ce 99 

Merrick Scale Mig. Co 75 

Well Drilling Machinery and 

Broderick A Bascom Rope Co 42 43 

Harron, Rickard A McCone BackCover 

Keystone Placer Drill Co 77 

Star Drilling Mach. Co 79 

Union Iron Works Co 47 

January It, 1914 




WkMb, lar 

■ fli 
Wall Mliiiii«lar Wlirrll'.. 
«lrr I I oik 

Lu.lL.o Sayl.T Wlr- i'o IS 

\\ Irr ( ablra 

. a Buimm RopaOo. .a a 


.. ..;« 

! tin » : 

7 1 M llomca 
Rruuti Corporation. Th.. r 

Braun KnrvM ttolinann Co 
Ifenver Kir- i Ui > ■• 



KMwikn! Manufactuntn Co 73 

TTaylur Kim. 4 Mrs. Co S V 

Till. 'II Iron Work. I ■ I. 

/In. I » il - 1 sail Mm* Inaa 

AUIni. Kroll A Co 80 

Brmiin Corponuion, The ey 

Brauii-K n.-. l.t llolmatio Co M 

IVnvir Kin- Clay Co ''• 

RmMlarAHawlai'lu-ri'hwiili'uli " 

Gold Balances 

have been used for more than 

10 YEARS by 

Tho American Smelting .fc Bel Co. 
I'urtltnul Gold Mining Co. 
■ HU. '■■ M. <'<>. 
" Btxatton'a linloixMiileuce. Ltd. 
" Vindicator CoiU. ti M.Co. 
" Aiax Gold Mining Co. 

They are all atlas our Multiple Rider Attachment. So are hundred* 
of other*. Write for catalogue. 







advanced in conception 
but highly practical in 
operation characterize 

the up-to-date line of 


The line is unusually 
complete, developed by 
scientific investigation 
and backed by wide ex- 
perience. Send for new 
complete catalog, con- 
taining much historical 
and technical matter of 
value to the engineer. 

No. 065 5-inch Transit. 
Reinforced truss standards; 
cylinder axis bearings; var- 
iable power eyepiece; tub- 
ular compass needle. 

Bausch & Ipmb Optical (a 


New York Washington Chicago San Francisco 

Our riding and pack saddles In use In Manchuria 





The Celebrated 
Visalia Saddles 

and Harness 
lor all purposes 
and all countries 

44 years experi 

ence building 


Illustrated Catalog 
No. 17-B Free 

2117 Market Street 


Combination Candlestick and Match Sale 






75 Cents 


Great Western Smelting & 
Refining Company 

Spear and Folsom SL, San Francisco. 

Babbitt Metal for all kinds of service requirements. 
We buy all classes of scrap metal. 

Any Muffle Troubles? 


If you have, perhaps you have never 
tried a Mine and Smelter Colorado Muffle. 
Scores of the largest users are specifying 
our muffles. Tell us the size you are using 
and let us send you a trial order. Try 
them and then compare your cost sheets. 

We also have crucibles, scorifiers, fur- 
naces, tile linings, clay goods for every 

The Mine and Smelter Supply Co. 

Denver New York El Paso Salt Lake City 



January 3, 1914 



For Forty-eight Years we Have Made Safety Fuse Exclusively in California 

Our factory ha* crown from a plant manufacturing one case a day by hand 
methodn to the one ire liuve jui«t occupied. Thin entirely ni-iv plant Ik vrlth- 
ont exception the Inreent of ll* kind In the entire world and In replete with 
new machinery made npeclally for oar exacting requirements. 
Our experienced nrfcanlEntlon devote* lis entire thought and time to making 

but one conn Illy — the bent typen of SAFETY Fl'SK that can be made. We 

ship only nt*w ufi.ils which can be obtained direct from m or from any of the 
powder eompanlen. Specify any of the brand* yon see reproduced In this 
advertisement and you will get the most reliable fuse made. Any defective 
goods replaced without quibble. 

The SAFETY Fl SE now generally recognised by all powder companies and 
miners Is the home product manufactured by the 

Coast Manufacturing & Supply Company 




On the Panama Canal 


I7QUAL in power to nitroglycerine dynamite, non-freezing, fumeless 
and non-volatile, TROJAN is the high explosive best fitted for 
your work in any climate. Write for free booklet. 


PtiMlan BIdg.. San Francisco 
65 Pine St.. New York 


Railway Exchange BIdg., Portland, Ore 

Humicker BIdg., Allentown, Pa. 
National Life BIdg., Chicago 

January i. 1>1 » 




.i-M Eton-Buna Brake Lin Ids grips the drum Instantly, 
vhto I applied, ana makes it possible to atop 

the machinery almost Instantly whi mauds, 

\,-i. by applying leaa i ■■■ i the brake, moUoi 

be retarded ui> slowly and smoothly aa desired. 




haa proved to bo the Ideal brake lining for machinery 
brakea, clutches, pulleys, and other machinery requiring 
na] contact, because It la composed of the long, 
tough Ilbres of pure Asbestos, reinforced with strong 
brass wires Interwoven In each strand. It Is not affi 
by heat from friction, nor weakened by grease, water, or 

J-M Non-Burn Is made In lengths, widths, and thick- 
nesses to most ;«H requirements. 

Write aesnresl Ilrnni'li fur Maniple and Booklet. 


Manulacturtrs of Asbestos Packings, Pipe Coverings, High 
Temperature Cements. Boiler Preservative. Conduit. Metal- 
lic Hose. Fuses. Boiler Plugs, Stack Lining, Tube Cleaners, etc. 

Albany Ctncfnnati Kansas* • - Francisco 

Baltimore Cleveland I os vngeles Sew York BeatUe 

i Diillas Louisville Omaha -t. lxmis 

iwroit Uflwankee Philadelphia Syracuse 

Chicago Indianapolis ttinneapollfl Pitusbuigb 1663 




lielt Users Protected 

A recent decree handed down by the United States District Court of 
the State of Virginia., enjoined an unscrupulous dealer from selling belts 
In Imitation of the CANDY Belt for the genuine GANDY. 

Similar decisions are being handed down every now and then In 
various slates for the protection of belt users in general. 

The GANDY Belt 

Is the original stitched- cotton -duck belting that has tempted so manv 
Imitators on account of its real merit. 

The GANDY Belt costs only one-third as much as leather and much 
less than rubber belting, yet it wears longer than either, usually. 

Get the red belt with the green 
edge, trade-marked and branded for 
your protection. 
Sample on request. 

The GANDY Belting Co. 

756 W. Pratt St., Baltimore. Mil. 

New York Office: 88-90 Reade St. 
Western Selling Agents ol the GANDY Belting Co.: 
San Francisco, Cal. : Compressed Air 
Machinery Co.: Los Angeles, Cal.: 
Warren & Bailey Mfe. Co.; Portland, 
Ore.: Portland Machinery Co.; 
Seattle. Wash.: Puget Sound Ma- 
chinery Co.: SpoKane, Wash.: Nott- 
Atwater Co.: Denver. Colo.: Hendrle 
& Bolthoft Mfg. & Supply Co. 

"Send some men down to 
five east— quick! Bad 
fall-in— can't go back to 
work till it's cleaned up." 

A message over 

Western Electric 


gets to the right place before the noise of 
the fall has died out. 

The safe, quick way for the mine — dust, 
gas, moisture and fool proof telephones. 

Let us quote on your requirements. 


Manufacturers of the 7,000,000 "Belt" Telephones 

Kew Tork 


Kansas City 

San Prsneteco 

Hon Ira al 



Mil" mlf 

Oklahoma City 





w Pittsburgh 


Los Angeles 





Si Paul 

















St Louis 

Salt Lai* City 

Port Und 




Member Society for Eloctrfcal Development 



January 3. 1914 



Tubes proouces maximum cocunc,^ 



Nine Convincing Arguments 

Why a Laidlaw Corliss AIR COMPRESSOR with CINCINNATI 
AIR VALVE GEAR will prove most efficient in your power plant. 

Write for Bulletin L-523- 32 





D. troil 


El Pa* 



Works: Cincinnati, Ohio - New York Office, 115 Broadway 

Canadian Agents: Musscns. Ltd., Montreal l-ih-« 

Kansas City Pittsburgh 

LosAngeles St. Louis 

Louisville Salt Lake City 

New Orleans San Francisco 
Philadelphia Seattle 

Hoists for Lower Prices Than 
Ever Before Offered ! 

Do Your Hoisting at Less Cost. For 26 years my hoisting machines 
have proved their superiority in mine work everywhere — reliable operation 
at a less cost per ton-foot lift. I make them even better now, and what is 
more, I will sell them lower than ever. 


Kerosene Distillate Gasoline 

Six regular sizes, 12 H. P. to 40 H. P. Steel drums, capacity 
600 to 1600 It. cable. (Built sectional on order.) Speed variable 
at will of operator. Depth indicator shows bucket positions. 
Engines have vertical valves, each in separate pocket ; separ- 

ahla *.v1inr1orfi -i H i 1 1 *; ti hi f Ipncrrh rnnnprtintr rnHs Mini nhns- 


J'lll' V.1 |-/V/EJ l UVIll VI J \J* IVJ1UUU. t'iWJi 

and continuous satisfactory service, 
prices, with full descriptions. 

Write for "cut-in-two' 

Witte Iron Works Co. 

2409 Oakland Ave., Kansas City, Mo., U.S.A. 

See These Prices ! 

12 H. P., $500 
15 H. P., 542 
20 H. P., 600 

25 H P., $700 
30 H. P., 750 
40 H. P., 990 

Send tor 

Jiinunr> ;. 1914 



is particularly successful in dewaterin^ oil flotation concentrates. The con- 
centrates are dried to an exceedingly low decree, and the cake dumped is of 
such a character that further drying occurs by contact with the atmosphere. 
Concentrates dried by the Kelly Press are capable of bein^ transported long 
distances in the coldest weather with no danger of freezing, thus obviating 
entirely the annoyances in handlinjr a frozen product. 

The cost of drying your concentrates the Kelly way is but a few cents per 
ton, and the rugged construction of the Kelly Press insures an installation 
of permanency and free from breakdowns of any kind. 

Let us make you a proposal and demonstrate to you the economies that can 
be effected by the Kelly Press. The entire engineering staff of this com- 
pany is at your service. 



Write for Bulletin No.W-32 
containing full description 

Some well known users of Woodbury Jigs 

Calumet & Hecla Mining Co Lake Linder. Mich. 

Quincy Mining - Co Quincy, Mich. 

King Philip-Winona Mills Winona, Mich. 

Ahmeek Mining Co Hubbell, Mich. 

Atlantic Mining Co Redridge, Mich. 

Allouez-Centennlal Mines Point Mills, Mich. 

Pittsburg & Montana Copper Co.... Butte, Mont. 
Holland American Tailing Mills.... Joplin, Mo. 

Doe Run Lead Co Rivermines, Mo. . 

Arizona Copper Co Clifton, Arizona. 

Copper Range Consolidated Co Houghton, Mich. 


The pulsations being in line with the flow of the 
pulp over the sieve the capacity is increased and at 
the same time a complete stratification takes place. 
This allows the discharge points to operate on lay- 
ers which contain their proper grains only. Hence 
the products. 

Concentrates: Clean cup and hutch concentrates. 

Middlings: A true product with no free mineral 

Tailings : Lower in values than any other system. 

Champion Copper Co Freda, Mich. 

Baltic Mining Co Redridge, Mich. 

Michigan Copper Mining Co Keweenaw Bay, Mich. 

Keweenaw Copper Co Phoenix, Mich. 

Atlas Corporation Granite Falls, Wash. 

New Stockton Mining Co Stockton, Utah. 

American Sapphire Co Yugo, Mont. 

Kennecott Mines Co Kennecott, Alaska. 

Old Dominion Copper Mining Co.... Globe, Ariz. 

Detroit Copper Mining Co Morenci, Ariz. 

Tezuitlan Copper Co Tezultlan, Mexico. 

United Minerals Association Boise, Idaho. 

PRINCIPAL PRODUCTS: Rock Crashing Machinery, Mining and Smelling Machinery, Cement Making Machinery, Wood Impregnating 
Plants, Loomis-Pettlbone Gas Generators, Suction Gas Producers, Cyanide and General Steel Tank Work, Woodbury Jigging System. 


WORKS: CUDAHY, WIS. New York Office: 115 Broadway 

DISTRICT OFFICES^ New York Chicago EI Paso San Francisco 

WESTERN SALES OFFICE : United Iron Works, Spokane, Wash. 




January 3, 1914 


Combined in One Machine 


First Cost 

Floor Space 

Horse Power 


Up Keep 


Delivers a 

Finished* Product 

Without Trommels 

Classified Middlings 
Separated Slime 
Clean Tailings 

_ ii 

■ ■ 



a Thlalman Patent 


Sole Licensees and Manufacturers 

CHALMERS & WILLIAMS, Chicago Heights, 111. 


shearer & mayer DRAGLINE CABLEWAY 


For handling TAILINGS and for handling GRAVEL 
in PLACER MINING. The excavator is operated on 
an incline cable over a long span by means of a 
double drum friction hoist. It will excavate over a 
large area. It will dig equally as well from under 
water as it will from a dry pit. 

ING done in one operation of a double drum engine. 

Kxcavator Bucket Pumping Load on Spoil Pile 

The Wide Range of Adaptability, Low Cost of Installation, 
Simplicity of Construction, Low Cost of Maintenance are some 
of the many advantages which this excavator has to offer. 

Write us your conditions and require- 
ments and for further information. 



1141 Monadnock Block, Chicago 

Jummry 8, 1914 


Electric Smelting of Complex Zinc Ores 


The Continuous Zinc Furnace Company has developed to the initial commercial 
stage a continuous process of preheating ana electric smelting, making in one operation 

Spelter, slag, copper matte and lead bullion. 

It has built at Hartford. Conn., a furnace which is now working. 
Metallurgists are invited to witness the operation. Results will be reported by a 
metallurgical authority and the products weighed, sampled and analyzed by a New York 
firm of public samplers. 

Under conditions in the West the treatment cost is estimated at $10 per ton of ore. 
Recoveries are estimated as follows : 

Ore Analysis Recovery Lost per ton Ore 

Zn 25% 80% 100 lb. zinc 

Pb 10% 90% 20 lb. lead 

Cu 2% 85% 6 lb. copper 

Ag 10 oz. 98% — 

Au 0.50 oz. 100% — 

(The above exclusive of roasting losses) 
The Johnson process requires zinc ores high in lime and iron. 
Early in 1914 we will grant licenses to two plants. 
Those interested are requested to correspond. 


W. McA. JOHNSON, Pre.. 

34 Morgan Street Hartford, Conn. 

The Steel Frame "SAMSON, JR." Electric Drive 

A Steel Frame Hoist with Steel Gear. 
Much lighter than a cast-iron hoist could 
possibly be — and much stronger. 

Entirely self-contained and easily 
moved. The cost of transportation due 
to light weight is small. 

Load or rope pull, Hoist No. 201—1000 
lbs. Load or rope pull, Hoist No. 202 — 
2200 lbs. 

Furnished With Alternating or Direct 
Current Motors of suitable power for load 
and rope speed specified by purchaser. 

For mine hoisting, prospecting, for 
winze work and innumerable situations, it 
is just the thing. Maximum tonnage at 
minimum cost for installation, operation 
and upkeep. 

Carried in stock for immediate ship- 
ment. Also Single and Double Drum 
Electric Hoists of larger capacities. 

Single Friction Drum Electric Hoist 





January 3, 1914 

TH E /(JFK/N ftULE £o. 


Windsor, Can. 

Lcndon, Eng 


Manufacturers of a Complete Line of 

Steel and Woven Measuring Tapes 
Steel Rules Wood Rules 

Measuring Tapes 
and Rules 



These are Simple Indisputable Facts and Recognized as Such 
by Everyone Familiar with This Line of Goods. 

To our "Challenge", "Challenge Jr.", "Rival", "Rival Jr." Steel Tape* have just 
been added Features Never Before Found in tapes selling at the price of these. 

All of tli tapes BOH famished with Push-Button-Opening Winding Handle, nml further, 

a POSITIVE ACTION Push Button Opener of Entirely New Design. 

"Challenge" and * Challenge Jr." l.-nther cases itr.' iimv'Steel Lined Throughout. That 

means the cases are built to s-ay built. 

"Rival" and "Rival Jr." Tapes have Knuiled Edge Nickel Plated Cases. 

These Tapes ar.- Guing to Maintain and Extend 

The /UFK/N Reputatio 

of course, and the Price is same as Before 




Motor starts automatically when current is 
thrown on. 

Will start heavy loads with small amount of 
starting current. 

Remote control without expensive external con- 
trollers or complicated wiring. 

Especially suited for driving mine equipment 
such as Pumps, Ventilating Fans, Air Com- 
pressors, etc., located at remote points. 

No danger of fire from sparks because there are 
no sliding contacts nor brushes on the motor. 

For Hoists; controlled by simply reversing 

Furnished in sizes 5 to 30 H. P., 3 phase, 60 

For detailed description of this wonderful Motor 
write for catalog No. 6A639. Other types and sizes 
of Motors for all commercial circuits. 

Oil Engines 

Producer Gas Engines 

Gas Producers 


Air Compressors 

Ciushers and Rolls 
Rock Drills 
Drill Sharpeners 
Pipe and Fillings 

Steam and Power Pumps 
Mine Cars 
Mining Supplies 
Electric Motors 

Electric Light Plants 
Electric Hoists 
Oil Engine Hoists 
Electric Pumps 


St. Loali 

I.os Angeles San Francisco Seattle 
Portland Salt Lake City Omaha 

St. Panl Chicago New York 

January •'!. l''l I 

minim; AND >< II Mil l< I'KI SS 

American Bridge Company 01: NkwYork 

Hudson Terminal-30 Church Street, NkuYork 

c Manufacturers of Steel Structures of all classes 
particularly- BRIDGES and BUILDINGS 

NEW YORK. N. Y., Hudson Terminal, 
30 Church Street 

Philadelphia. P». , Pennsylvania BuilJing 
Boiton, Mm. John Hincock Bldg. 

Baltimore, Md. , Continental Trust Building 

PITTSBURGH, PA. . . Frick Building 
Rochester, N. Y. Powers Block 

Buffalo, N. Y. . . Marine National Bank 
Cincinnati, Ohio . . Union Trust Building 

Atlanta, Ga Candler Building 

Cleveland, Ohio . . Rockefeller Baildinf 
Detroit, Mich., Beecber Ave. &M.C.R.R. 

CHICAGO, ILL., Commercial National 
Bank Building 

St. Louis, Mo.. Third Nat'l Bank Building 

Denver,. Colo., First Nat'l Bank Building 

Salt' Lake City, Ulah.WalkerBankBuilding 

Duluth, Minn Wolvin Building 

Minneapolis, Minn, ,7th Ave. & 2d St.S.E. 

Pacific Coast Representative: 

U.S. Steel Products Co. , Pacific Coast Dpi. 

SAN FRANCISCO, CAL. Rialto Building 

Portland, Ore. . Selling Building 

Seattle, Wash. ,4thAve. So., Cor.Conn, St. 

Eiport Representative: United States Steel Products Co., 30 Church St., N. Y. 




and class 14 elf 
:arson irrigatic 



Bucyrus electric shovels and draglines are digging as hard materials with as great outputs as steam 
shovels. We can point with pride to successful installations the country over. 

We also build shovels of all 
sizes. Dragline Excavators, 
Dredges. Unloading Plows. 
Wrecking Cranes and 
Locomotive Pile Drivers. 





THE TUBA. CONSTRUCTION COMPANY, San Francisco, representatives for placer dredges in 
1Bt Western United States and Canada, Philippines. Japan and China. 



January 3, 1914 


Is Easily Transported. 

Your laborers can assemble it. Our wood pipe 
will carry more water and last longer than metal 
pipe. . 

We manufacture Pipe and Tanks from T>oth 
Douglass Fir and Redwood Lumber, making a 
specialty of Fir at our Portland factory and Red- 
at our San Francisco and Los Angeles fac- 
tories. Any pressure up to 400 ft. head. We make 
tanks for oil. water, cyanide plants, pipe or run- 
water, irrigation, power plants. 

Mining catalog No. 7 should be In your desk. 
"Wooden ripe. Its Many Advantages" is interest- 
ing. Both are free. 



31 p, Market St.. Baa FraacJacoi Cnl. 

Dox 130 Kfiiioii Station, Portland, Oregon. 

Room 408 Kqullalile Ilk. lldj?., I.on Angles. Cnl. 




Abeodroth A Root Mfg. Co 21 

Ains worth A Sons. William Bfl 

ting Experts Oo 

Albany Lubricating Co "9 

Alberger Pump A Con. Co '.'0 

Allen American Manganese Steel 

Co. Edgar — 

Allis-Chalmers Mfg. Co 62 

American Bridge Co 9" 

American Locomotive Co 70 

American Metal Co.. Ltd BO 

American Spiral Pipe Works 28 

American Bteel A Win Co 78 

American W. 11 Works 27 

American Zinc Ore Separating Co .76 

Atkins. Kroll A Co 80 

Atlas Car A Mfg. Co 81 

Bacon. Earl C 81 

Baldwin Locomotive Works 70 

Bartlett A Snow Co., CO 79 

Bausch A Lomb Optical Co 89 

Beer. Sondhetmer A Co 81 

BlaisdellCo - 

Blake. Mofflt A Towne 71 

Braun Corporation. The CO 

Bmun-Knecht-Heimann Co C9 

Broderick A BajooS) Hope Co. ...48 18 

Brown Hoisting Machy. Co 89 

Bucyrus Company 97 

Buff A Buff Mfg. Co B8 

Bury Compressor Co 74 

Butters Patent Vacuum Filter Co. ..71 

California Per. screen Co 83 

Calif. Ore Testing Co 74 

Calif. Photo Engraving Co 87 

Cameron Steam Pump Works 

riiry >p ring Works 88 

' <. M. CO 

Catlin A Powell Co — 

Chalmers A Williams 94 

Chester • <"o 7-1 

Chicago Pneumatic Tool Co 72 

Chrome Steel Works 86 

Air Compressor Works — 

Drill Co 3 

[fg. A Supply Co 77 90 

rille Blower Co — 

«'on-. Arizona 3 83 

Consolidated Min. A Smelting Co.. 

of Canada.. Ltd 80 

Continuous Zinc Furnace Co 95 


Cooks Sons. Adam 70 

Delster Concentrator Co 50 

Deleter Machine Co 3 

Deane Steam Pump Co — 


DemaraBtCo.i D. D 17 

Doming Co.. The -74 

Denver Engineering Works Co 39 

Denver Fire Clay Co 76 

Denver Quartz Mill A Crusher Co. ..71 

Dewey. Strong A Co 40 83 

Diamond Rubber Co.. The — 

DlbertACo., I-. «" 7f, 

Dixon Crucible Co.. Joseph "7 

Dodge Mfg. Co 30 

Dorr Cyanide Machinery Co r >7 

Du Pont de Nemours Powder Co.. 
E.I 72 

English Iron Works Co '.'5 

Fairbanks. Morse A Co 96 

Pita Water Wheel Co 8* 

Flory Mfg Co.. 8 76 

Frenier A Son 74 

Gandy Belting Co 91 

General Electric Co 12 

Goldschmldt Thermit Co 14 

Goodrich Co.. The B. F 16 

Gt. West. .Smelting A Ref. Co 89 

Hammond Iron Works 87 

Harbison -Walker Refractories Co... 74 

Hardinge Conical Mill Co 58 

Harron. Rickard A McCone 

Back Cover 

Heald's School of Mines 82 

HendrieABolthoffMfg.ASup. Co... 2 

Hendy Iron Works. Joshua 49 

Hicks Judd A Co 72 

Button A Co..E. F 82 

Hyatt Roller Bearing Co 48 

Ingorsoll-Rand Co 5 

International Eng. Congress 24 

International S. A R. Co 26 

Jackson Iron Works. Byron 76 

Jeanesville Iron Works 78 

Johnson Engineering Works 71 

Johns-ManvilleCo.. H. W 0] 

Mfg. Co 29 

Kelly Filter Press Co 98 

Keystone Placer Drill Co 77 

Kohlbusch. Herman. Sr 88 

Krogh Pump Co — 

Laidlaw-Dunn-Gordon Co 02 

Lane Mill A Machinery Co 77 


Leschen A Sons Rope Co. A 6, 7 

Lidgerwood Mfg. Co 44 

LietxCo. A 89 

Lima Locomotive Corporation 82 

Lindahl 3p< cdaltj Co 89 

Linscott Drilling Co 83 

Ludlow-Saylor Wire Co 85 

Lufkin Rule Co 96 

Lunkenheimer Co 78 

Mac Donald . Bernard 41 

Marion Steam Shovel Co 23 

McKIernan-Terry Drill Co 72 

Meese A Gottfried Co Back Cover 

Merrell Mfg. Co 81 

Merrick Scale Mfg. Co 75 

Metallurgical Co. Front Cover 

Metals BuyingA Refining Co 83 

Millur-Farrish Co 80 

Ulna A Smelter Supply Co 38 89 

Minerals Sep. Am. Syn. Ltd 51 

Montague A: Co.. W. W 15 

Moreland Motor Truck Co 19 

Mountain C« pperCo 80 

Mulconroy Co,, Inc 77 

Myers, Geo. W 86 

National Service Bureau Inc — 

National Tube Co 36 

. I it 72 

New York EngineeringCo 32 

Nordberg Mfg. Co 4 

Oliver Continuous Filter Co 5G 

Q-Arthnr Koppel Co 81 

Pact fie Foundry Co 45 

Qear A Tool Co 31 

i :il Works. 77 

Pacific Tank & Pipe Co 98 

Painter Tramway Co 74 

Pelton Water Wheel Co 79 

1 Perrin A Co., Wm. R 74 

j Phosphor Bronze Smolting Co 81 

Pierce, L. s 77 

I Powell Co.. Wm 18 

Power A Mining Machy. Co 03 

Power Specialty Co ~\ 

: Steam Pump Co.. Fred M.. .7 J 

Proske.T. B :;. { 

Putman Boot A Shoe Co 76 

1 Ralph, Joseph 50 

Redwood Manufacturers Co 73 

Riblet Tramway Co 74 

mpressed Air A Drill Co 71 


Robins Conveying Belt Co 54 

Roebling's Sons Co.. John A 13 

RoesslerA Hasslacher Chemical Co.~22 

Salt Lake Hardware Co 88 

San Francisco Plating Wks 82 

Sauerman Bros 94 

ScuUin-Gallagher Iron A Steel Co.. . 74 

Seattle Machine Works 82 

Selby Smelting A Lead Co 80 

Schaw-Batcher Co 53 

Smooth-On Mfg. Co 76 

Snow Steam Pump Works — 

Standard Diamond Drill Co 74 

Star Drilling Machine Co 70 

Sullivan Machinery Co 55 

Swansea Cons. G. A C. Mining Co.. .81 

Taylor Foundry A Eng. Co 99 

Taylor- Wharton Iron A Steel Co. . . .74 

Thompson Balance Co go 

Trautwine Co 75 

Traylor Engineering A Mfg. Co... 8. 9 

Trent Engineering Co.,L. C 73 

Troemner, Henry 88 

Trojan Powder Co 90 

Union Construction Co 18 

Union Iron Works Co 47 

U. S. Smelting. Ref. A Mining Co... 80 

U. S. Steel Products Co 78 


Van derNaillcn School, A 82 

Van Winkle. H. L 74 

Varney, N. E 82 

Visile stuck Saddle Co 89 

Vogelstein St Co., L 80 

Vulcan Iron Wks 70 

Watt Mining Car Wheel Co 77 

Webster Mfg. Co 71 

Wedge Mechanical Furnace Co 25 

Well man-Sea ver-Morgan Co 10 11 

Western Electric Co 91 

Westinghouse Electric A Mfg. Co.. . .— 

Wildberg Bros 80 

Wiley A Sons. John 76 

Wilke. R. M 83 

Wilson A Co.. J. C 82 

Witte Iron Works 92 

Wood Drill Works 85 

Worthington. Henry R — 

Yuba Construe tion Co 37 

January :, 191 1 

MIMV. A\l) >< II Mil It I'KI SS 

Have you ever considered using a locomotive 
crane at your mine or mill? 

Being lelf-propellad tod having complcti- 

rotation of the I m, it will handle all your 

ore and other material rapidly ami at a low 

lli'- illustration sIuiwh a Urownhoist 

srane loading ore, L% to :i tuns at a load, 

with only one man, the operator of the crane. 

i hir oataiog thoxet (hit grant i» utt 

ul minis mill mill*. Writ, fur it. 


New York Pittsburgh Chicago San Francisco 

Established 1861 

Incorporated 1996 




The Taylor Pumps have proven absolutely suc- 
cessful in every installation made. Your installa- 
tion would not be an exception. Our best efforts 
are always placed in our pumps. Our pump 
customers are our best boosters. Let us send 
our catalogue. 


339 Mill Street Grass Valley, Gal. 

The Merrick Conveying Weigher 

will give you an Accurate Record 
of Weight in any unit desired 

Are you using belt, bucket or pan conveyors? Are the 
loadings intermittent? Continuous? Is the operation 
at partial or full capacity? 

It makes no difference — The Merrick Conveying 
Weigher will give you a record of weight with a 
guaranteed accuracy 

Within one Per Cent 

So simple is it, that the ordinary "hand" can operate it. 
Readings can be duplicated at distant points. This 
device is endorsed by highest authorities. 

Manufacturers of Ball Bearing Belt Conveyors 


92 West Street, New York City 


The A. M. EllicOttCo. 

301 St. James Street 



Herbert Ainsworth 

The Corner House 



Victor M. Braschi 

Mexico ' iiy 


Zimmer Conveyor < •> 

*2 Mark Lane 

Lowltm. E, C. 


American Concentrator < 'o. 



Frank R. Perrott 
AdardAan House 

Sydney. N. S, W. 



January 3. 1914 



Denver Engineering Works Co. 2500 lb- Capacity Single Drum Hoist. 




Harron, Rickard & McConc 



Fop 1914 

that our standards in Transmission, Elevating, 

Conveying and Screening Machinery w iH De 

the same as they were in 1913, 


Mmb? $c (fatttttmb (Enmpatuj 


660 Mission St. 

Engineers and Manufacturers 

558 First Ave. S. 67 Front St. Pacific Building 



130 No. Los Angeles St. 


"Science hii no enemy uvc the ignorant." 

Whole No. 2790 *££&'? 

San Francisco, [anuary 10, v>\\ 

i nun imiivxs ii u UMOB 

Slnglr I oplrt. If n I nil. 


EST Mil l-lllli M » * 1 i. i-'"i 


Assistant Editors 

Associate Editor 


San Fran 

M. W. v.. ii BBRNKWITZ ( " 

Now York 


T. A RICKARD Editorial Contributor 

EliWAKP WALKER Correspondent 

A. W. Allen. Charles Janin. 

Leonard S. Austin. James I". Kemp. 

Gelaslo Caetani. C W. Purlngton. 

Courtenny De Kalb. . C. P. Tolman, Jr. 

P. Lynwood Garrison. Horace V. Wlnchell. 



Cable Address: Pertusola. Code: Bedford McNeill (3 editions). 

CHICAGO — 734 Monadnock Bdg. Tel.: Harrison 1620 and 636. 
NEW YORK — 1308-10 Woolworth Bdg. Tel.: Barclay 6469. 
LONDON— The Mining Magazine. Salisbury House, E.C. 
Cable Address; Ollgoclase. 


United States and Mexico * 3 

Canada * 4 

Other Countries in Postal U nion 21 Shillings or to 

L A. GREENE - - - - - - Business Manager 

Entered at San Francisco Postofflce as Second-Class Matter. 


. 89 



The Secretary and the West 

Mill Construction and Operations 


Gold Dredging in the United States Charles Janin 

Revision ot the Mining Law .... ...Grafton Mason 

Ore Production of Joplin District for 1913... Otto Ruhl 1 

Ore Production of Jopl- 

Iron and Steel Production in France....... 

Paris Correspondence lui 

Oregon Metal Production '[J 3 

Cranium-Vanadium ■ ■ ■ • • ••• • • ■ 

Mineral Production Statistics for 1913.. 

The California Mother Lode and the Plymouth Mine 



Mine-Rescue Telephones 

Specialism and Efficiency . . . • • • • SP«laUSt u 

Lead Salts in Cyanidation lohn B. Livingston ill 

DISCUSSION: ., _ _ ,,.. ,„ 

The Government and the Individual. . .Henry SHaa itt 

Specialism and Efficiency -i- -.Speclalls 

Lead Salts in Cy; 






Schools and Societies 

The Metal Markets joj 

The Stock Markets ;•;;:•■' ',' I2n 

Current Prices for Ores and Minerals "» 

Current Prices for Chemicals ■ ■ lfJ5 

Company Report ■ - ■ - 1 '>r, 

Commercial Paragraphs • 126 

Catalogues Received 

II 9 




SANTA DOMINGO goldfielda have attracted atten- 
tion from time to time, and there have been many 
tales of riches to be Found there bj dredging. Mr. 
Benrj K. Lie Pevre lias recently returned from an 
eight iiiniiilis' investigation of the countrj and pw 

mits us to quote liim to tl ffeel thai there are oo 

gold placers there Buitable for dredging. 

GOVERNMENT. aid to prospectors by the t •i.tniuon- 
wealth government nl' Australia, which controls 
tin- Northern Territory, an area of 523,620 square 
miles, goes to lengths unknown in the United States. 
The government is erecting a five-stamp mill for the 
benefit of prospectors in the .\Iaranho\ (infield. The 
erection and operation of government mills in West- 
ern Australia and Victoria has, on the whole; been a 
great aid in stimulating prospecting and developing 
new districts. Whether such means are either neces- 
sary or advisable elsewhere is less certain. 

STATISTICS are interesting as approximations 
showing the general trend of metal product ion, 
and when estimates are presented that the calamine 
production of the Joplin district fur the year 1913 
was 40.346,251 pounds, valued at $491,243, such figures 
cannot he claimed as being exact to the last digit. In 
the current issue we present the well known produc- 
tion statistics of Mr. Otto Ruhl, of Joplin. and in the 
Special Correspondence columns will be found figures 
covering the same district, compiled by our Joplin cor- 
respondent. While differing somewhat, the totals show 
a decided activity in the mining of the lead and zinc 
deposits of this district. 

ARBITRATION as a means of preventing industrial 
troubles has not been entirely successful. A com- 
mission in New South Wales, Australia, has recently 
investigated the operation of that slate's industrial 
laws covering a period of twelve years. The object of 
arbitration is to stop strikes and lockouts, but the 
Commission found that the strike is still used by labor 
unions. Threats of strikes are indeed more frequent 
than ever, and it seems that agreements by peaceful 
met hods, such as arbitration, are still far from uni- 
versal. During the nine months that ended on De- 
cember 1, 1913. there have been 148 disputes in the 
Commonwealth, involving 41.737 employees. The num- 
ber of working days lost was 529,642, and the loss in 
wages $1,110,000. 



January 10. 1914 

FROM Malaguit in Paracale, Philippine Islands, 
comes the news that the village churchyard has 
been located as a most promising piece of placer 
ground and negotiations are afoot for mining it. While 
the churchyard has generally been consecrated to other 
purposes than the dredge, gold is where you find it. 
and who knows but what othei might well turn 


As an undesirable citizen, Charles If. -Mover, pres- 
ident of the Western Federation of .Miners, has 
been forcibly deported from Calumet by the 'Citizens 
Alliance.' This action on the part of the 'Alliance' 
should meet with the approval of both strikers and 
operators as little good could be expected from the 
efforts of one so ill-reputed in the district as the pres- 
ent president of the Western Federation of Miners. 

MEMBERS of the American Institute of Mining En- 
gineers residing in northern and centra] Califor- 
nia will meet at the Engineers' Club, in the Sutter 
hotel, of San Francisco, on the evening of January 12. 
to act upon the report of tin' Committee on Organ- 
ization. Preceding the meeting a dinner will be 
served at 6:30. The subject for consideration is one 
of particular interest to the local engineers, and an 
-tin"/ meet iii'_' is anticipated. 

O UKTHEE argument to the effect that the mininrg 
-*■ law needs revision in more than incidental par- 
ticulars is advanced on another page by Mr. Grafton 

Mason, who has most courteously answered our Mace. 
(Ionian cry for help. His arguments are not only sound 
in themselves, hut coming as they do from one who 
as attorney for the land department of the Northern 
Pacific railroad, has seen much of the practical appli- 
cation of the mining law. they an' entitled t >nsid- 

eration even from those who affect to believe that as 
to law no opinion is final save that of a lawyer. 

r^K.W'KNKSS in discussing the situation is not easy 
■*■ when the grade of ore is going down. We have 
frequently commended the full and frequent state- 
ments given out by the Goldfield Consolidated Mines 
Company, ami are sure that our readers will read 
with interest the following from a speech made by 
-Mr. Albert Burch at a recent public dinner held at 
1<1 to inaugurate a movement designed to make 

that city a more livable place. "So far as the Gold- 
field Consolidated is concerned, everyone knows that 
the cream has been skimmed and that we are now doing 
our best t" suhsist on slummed milk; but at that we are 
doing fairly well. It can probably never be the profit- 
earner that it once was. nor can its present scale of 
operations lie continued indefinitejy : but on some basis 
the Goldfield Consolidated will be running for several 
years yet. We are now working a low-grade mine, and 
in order to make it pay we do not plan to reduce 
wages; nor to ask any man to break his back doing 
an unusual dav's work: but we do ask him. if he is 

our friend, to bend his back to pick up a dollar's worth 
of drill steel if he sees it being buried in the muck, and 
in any other way that he can. use his brains as well as 
his hands to help stop leaks." We trust that the ap- 
peal made by -Mr. Burch will evoke the answer it de- 
serves, and \v« hope with him that the great mine may 
run for many years yet. 

TXCOME TAX questions have been worrying officials 
■*■ of a good many American mining companies. Xot 
that they are so excessively wealthy, but because of 
the difficulty of determining depreciation in the case 
of a wasting asset, such as ore in the ground. Many 
have been puzzled by the decision of the Supreme 
Court in the case of Stratton's Independence, Limited. 
The matter is really very simple. Mining companies 
will be allowed a depreciation charge of 5 per cent 
on their gross output, and all other possibilities are 
swept away. This covers the past as well as the future, 
and opens the way to corresponding rebates and addi- 
tional collections where any other basis was used in 

The Secretary and the West 

The report of Mr. Franklin K. Lane, as Secretary 
of the Interior, for the fiscal year that ended June 30 
last, was made public Christmas eve. It is a straight- 
forward readable brief, rather than the usual dry and 
formal departmental document. The Secretary has had 
the good sense to concentrate his attention upon one 
of the groups of questions now before his Department, 
and he has presented his recommendations and the 
argument for them so simply, as to increase greatly 
the chances for securing favorable Congressional ac- 
tion. Many phases of the problem of further disposi- 
tion of the public lands, which is what chiefly concerns 
the Secretary, have been the cause of acute and acrid 
controversy. A number are even now bitter fighting 
ground, and yet it is fair to say that already differ- 
ences of opinion are disappearing, and there is un- 
doubtedly a sufficient agreement as to policy to war- 
rant Congress settling at least a few of the many 
vexed questions. We believe that Mr. Lane is abso- 
lutely right when he says, and the italics are his, "The 
West no longer urges a return to the hazards of the 
'land is land' policy. But it does ash action." We sin- 
cerely hope that enough of the spirit of fair compro- 
mise may obtain at Washington this winter to permit 
determination of at least the more pressing matters. 

Speaking in general terms, the Secretary favors a 
og system for the coal lands, not only of Alaska 
but of the rest of the United States, and for the oil, 
phosphate, and potash lands. Further than that he 
does not go. and in this we believe him wise. What 
may be proper as to further disposition of other min- 
eral lands, no one can certainly say at this time, but 
as regards coal, oil, phosphate, and potash lands, there 
is sufficient knowdedge to permit intelligent action. 
Our own views regarding this are too well known to 

January 1" I'M I 



require length] meal While no) prepared t" 

endorse ever} detail of the Secretary '• proposed form 
of lease, we heartilj tavor the general plan, and we 
have ii" fear thai any bill which 
will doI be Bttffloientlj liberal. In later numbers we 
shall speak nf particular proposals. 

Another of the r mmendationa made bj the Sec- 
retary is thai the various activities of the United 
States Government in Alaska be placed under the 
charge of a single board or commission and thai this 
board be given large freedom of action. As he truly 
"there can !"■ no satisfactory administration of 

land laws, or any other laws.- at ;i distance of 

miles from the point of action. The eye thai sees the 
need should be near the voice thai gives the order." 
It will be remembered thai Mr. Taft, when president, 
favored a commission form of governmenl tor Alaska 
and thai his proposal raised a storm of dissent. Since 
then an elective government has been constituted for 
the Territory and to it has been delegated the local 
political power. As we understand Mr. Lane's sug- 
gestion, what is now proposed is a Hoard of Directors 
to manage the property in Alaska that belongs to the 
United States. There is an important difference, and. 
while there would seem to be room for much friction 
between such a board and the local Legislature, the 
proposal merits careful consideration. Certainly there 
is need for bringing the administration closer to the 
local needs of the people, and. without pretending any 
greal sympathy for the 'black bear which is in the 
care of one department while the brown bear is in 
another,' we are quite prepared to agree that the or- 
ganization of administration in Alaska could be greatly 

As a whole, the report is a plea for the West: a 
demand that means be found, without undue sacrifice 
of national interests, to permit the continuance of 
the great work of building there homes for the people 
of the Nation. It is written by a man who honors 
and loves the West, and it rings true. 

Mill Construction and Operations 

In 1913 no country was especially conspicuous in 
the construction of new plants. In the United States, 
several interesting mills began work and others are 
well on toward completion. During October, the Com- 
monwealth mill, at Pearce, Arizona, started work. This 
mill consists of 30 heavy stamps, Hardinge mills, Pa- 
ehuca agitators, and Oliver filters, and has a capacity 
of 350 tons per day. Interesting work is being done 
at the Tom Reed, Gold Road, and Vulture mills, and 
in Texas the Presidio Mining Company has converted 
its pan-amalgamation mill to cyanide with a gratify- 
ing increase in capacity. In California there are four 
all-sliming plants, the latest being the Globe 20-stamp 
mill at Dedrick. Trinity county, and in a few months 
a 300-ton mill will be erected at the Plymouth mine, 
California, embodying the best Mother Lode practice 
together with several new features. In the meantime. 

the nine mills containing i"" .,, ,,,,- 

1,1 Amadoi unty are i factor) work, as de 

scribed in the last Uwuo, and elsewhere aloi 
there »■ re fen changes. Small stamp mill 

nide plants n, Oregon bat itinued in operation 

At Fairbanks, in Alaska. 16 small mills a,v in oper 
ation, and at Juneau proposals for new nulls t,, treat 
'"''' worth o,,l\ $1.50 p er |,,„ .,,.,. interesting in that 

stamps ami rolls will 1..- tested side by si. I.-. The work 

here has ben described for our readers bj Mr. I-'. \v. 

Bradlej and Mr. Qranl Tod. Tin- current year should 
see the lirst units in operation. 

1,1 Nevada e 800 ion mill, containing some novel 
features, is under construction for tin- Buckhorn com- 
pany. There will be ,,,, stamps, hut crushers, roils, 
Hardinge and tube-mills, Akins classiiiers. agitators, 
and Oliver filters. The ore is clayey and crushes eas- 
ily. At Aurora, in the same state, a large Stamp-mil] 
is being erected for the Aurora Consolidated Mining 
Company. In Nevada the Goldfield Consolidated treat- 
ed its 950 tons per day. with the usual good results. 

The seven mills at Tl pah continued literally to 

pour out silver bullion, the production being nearly 
35 tons per month. More stamps are being added to 
the West End mill. In Colorado the Stratton's Inde- 
pendence, Portland, Camp Bird.. Tomboy, and many 
small plants have been improved and were in continu- 
ous operation. In South Dakota the Ilomcstake com- 
pany added 20 to its existing complement of 1000 
stamps: the Wasp No. 2 treated ore as cheaply as 
ever, although circumstances prevented its operation 
during the full time. 

At Porcupine, in Ontario, Canada, both the Dome 
and Hollinger mills are being enlarged. Several 
plants for treating gold-bearing ores have begun work 
in adjoining districts. At Cobalt the Northern Cus- 
toms 40-stamp mill is being duplicated; the MeKinley- 
Darragh extensions were finished ; and the Nipissing 
high and low-grade mills continued their highly in- 
teresting work, the refinery output being about 17 
tons of silver per month. Canadian authorities are 
now experimenting with the object of saving the co- 
balt from the ores of the district. Two valuable con- 
tributions to metallurgical knowledge came from the 
Nipissing mills : desulphurizing of the ores by alumi- 
num, described by Mr. J. J. Denny in our issue of 
September 27, and precipitation of silver from cyanide 
solutions on aluminum dust. 

Although Mexico has been in the throes of a revolu- 
tion through the year, and many mining men have tem- 
porarily left the country, the mills at El Oro, Pachuca, 
and Guanajuato have worked without interference. 
Parral has had a troublesome year, and at present 
little is being done there. In Jalisco, El Favor plant 
is being enlarged, and mills of big capacity are under 
construction at the Cinco Minas and San Pedro Analco 
mines, also at the San Martin in Oaxaca, and a 500- 
ton concentrator at the Teziutlan Copper Co. in Puebla. 
La Blanca mill, at Pachuca, Hidalgo, is being enlarged 



January 10, 1914 

and the agitation system altered. During the past 
financial year the Santa Qertrudis mill treated 263,554 
tons of ore yielding 31,800 ounces of gold and 4,243,- 
000 ounces of silver. Improvements have been made 
to the HI Tigre mill, which treats a complex ore under 
numerous difficulties. Experiments with the manga- 
nese-silver ores of Jalisco are still under way. Ill Hon- 
duras the Eoaario, in Costa Rica the Abangarez, in 
San Salvador the Butters Salvador, and in Brazil the 
'Im del Rev mills have been in continuous oper- 

The Indian group of gold mines al Kolar increased 

output slightly, and improvements are being 
made >> t several plants, notably in slime treatment. 

There were apparently no important developments in 
the mills of West Africa. Rhodesia has been of inter- 
est on account of the new mills under construction, or 
about to start work, these being the Shamva, Cam & 
.Motor, Falcon, Antelope, Bell, Kimberley Reef, and 
New Found Out. Antimony has been one of the main 
sources of trouble in gold recovery in this country, 
and it will be interesting to watch results from the 
Cam & Motor plant where the practice includes dry- 
crushing in Krupp ball-mills, roasting in Edwards fur- 
naces, leaching sand, and filtering the slime. It has 
been designed from the best practice at Kalgoorlie, 
and has a capacity of 15.000 tons per month. On the 
Rand, an average of 9982 stamps and 287 tube-mills 
have been at work crushing 2.100.000 tons of ore per 
month. There have been several enlargements of plant 
in additional stamps and tube-mills, also three new 
Butters filter-plants at the Randfontein Central, Van 
Ryu Deep, and Geduld, with daily capacities of 1500, 
900, and 500 tons, respectively. 

The Oriental Consolidated stamp-mills and cyanide 
plants in Korea have operated continuously, and 
crushed an average of 25,000 tons per month. The 
gold and silver mills in Japan have run their usual 
even course. In Sumatra. Redjang Lebong and Keta- 
hoen mills treated the gold and silver ores according 
to their customary methods, there being no changes 
of importance. Going south to Australia, a new cya- 
nide plant was erected at the Scottish Gympie mine 
in Queensland. This is interesting, as at Gympie there 
is a large amount of graphitic slate, and, like the 
Mother Lode of California, there has been trouble from 
this mineral causing premature precipitation of gold. 
The ore is also low grade, and care is necessary in all 
departments. In New South Wales, there have been 
improvements to the equipment at the Mount Boppy 
stamp-mill and cyanide plant, which treats 11(100 tons 
per month. From the Cassilis mine in Victoria a very 
refractory ore is extracted, and after several years' 
experiments a new treatment • plant, consisting of 
stamping, concentration, cyanidation of pulp, and 
roasting and other treatment of the concentrate, is 
s i to be completed. At Bjplgoorlie, Western Aus- 
tralia, the dry and wet processes for treating Bulpho- 
telluride ores gave their usual satisfactory results. 

and profits were made at the Perseverance and South 
Kalgurli from ore worth from $5 to $6 per ton. In 
this journal of September 13, Mr. A. W. MacLeod dis- 
cussed the metallurgical tendencies in the state. While 
the development of oil-engines has expanded in other 
countries, the* great advance made in the use of suc- 
tion-gas plants in Australia, especially in the western 
states, has surpassed the progress made elsewhere. 
Grinding pans are still much in favor. Two plants have 
been built wherein the sand is first removed from the 
pulp by cones, the slime being thickened, and the sand, 
after being continuously agitated, rejoins the slime, 
both being then treated in the one vacuum-filtration 
plant. The Sons of Gwalia mill, 13,000-ton capacity, 
was remodeled: the Queen of the Hills mill, of Holman 
pneumatic stamps, is doing excellent work; as is the 
Bullfinch stamp-mill and vacuum-filtration plant. One 
of the most interesting mills, the success of which was 
doubtful at the end of 1912, was that at the Victorious 
mine. 40 miles from Kalgoorlie. Four Huntington 
mills, two pans, an agitation plant, and three Ridgway 
reciprocating filters treated 95,640 tons of ore in 12 
months to September 1913. This ore averaged $5.26 
per ton. and the profit totaled $173,000. The failure 
of the Howe volatilization process, as described in this 
journal of October 4, 1913. was unfortunate. As a 
result, two mines with large ore reserves are now shut 
down indefinitely. After a serious decline of the state's 
gold output since 1903, the past year in Western Aus- 
tralia has shown a considerable increase. 

In New Zealand, the Grand Junction at Waihi is 
adding 20 to its existing 40 stamps; the Waihi com- 
pany only operated its 200-stamp mill, treating 14,600 
tons, yielding $120,000 per month; at Karangahake, 
the Talisman continued treating its high-grade silver- 
gold ore, the average yields of late being 4300 tons 
returning $106,000. Recovering the old tailing from 
the river 6 to 15 miles below the Karangahake and 
Waihi districts, and treating it by tube-milling, agita- 
tion, and vacuum-filtration continued with interesting 
success at the W 7 aihi-Paeroa Gold Extraction plant. To 
date a total of 219.700 tons of tailing has yielded gold 
and silver worth $340,000. 

In connection with new processes, it may be said 
that attempts to use the Clancy system of regenera- 
tion of solutions have stopped at Cripple Creek. There 
is an increasing interest in the electrolysis of solu- 
tions. The new process of precipitating gold on zine 
wafers does not seem to have met with success, as at 
Waihi and on the Rand results were not satisfactory. 
Tlie litigation of the year included the Moore-Butters 
vacuum-filtration dispute; the Brown system of crush- 
ing in cyanide solution and concentration versus the 
Tonopah Mining Company; and the London & Ham- 
burg Gold Recovery Company versus the Golden Horse- 
Shoe Estates Company, in connection with the bromo- 
eyanide process, and trial of issues regarding flotation 
as discussed elsewhere. All of these subjects received 
extended reference in this journal from time to time. 

January ll>. L914 


Gold Dredging in the United States 

Bj OBAB .Ianis 


of dredge production in L913 are not availa- 
ble as \,t but are nol likely to vary greatly from thoae 
of 1912 when the production of gold wou from dredging 
operations in California was (7,429,951 . this was a de- 
crease of (236,506 compared to L911. As pointed out 
in my review of lasl year, the production of gold from 
dredging in this Btate reached its zenith in 1911 with 
$7,660,461, and a gradual decrease may lie expected. 
A number of dredges, notably in the OrovOle district, 
have exhausted, or nearly exhausted, the ground for 

months out "f commission, have been working steadily, 
and the yardage results will closely approximate those 
of 1912. No. 13 dredge, built in L912, has avi 

about L'.'.n.iKKI yd. per lie. nth from deep ground, and 

one month bad an output of 310,000 yd. While this 
yardage does not equal that of the blah,, ,i, 
mentioned elsewhere, considering the difference in the 
-round ban, lied, it marks without question jusl as good 
work. No. M. the new steel dredge being built for tins 
Company, and an excellent boat, began work late 
in December. Some delay was experienced in getting 


which they were built, and, except in a few instances 
where the machinery from these boats can be profitably 
transported and used on other areas, the boats will be 
dismantled and the equipment used for repairs. 

The most successful dredging enterprise in the state 
and in the world for that matter, is that of the Yuba 
Consolidated Gold Fields in Tuba county. With 11 
dredges operating part of the time until No. 2 was 
dismantled, the profits from dredging operations for 
the year that ended on February 28, 1913, were $1,640,- 
848 from 164.8 acres. The depth varied from shallow 
ground dug by No. 9 in working to new ground, to 
ground 70 feet deep handled by some of the other 
dredges. The average amount recovered was practi- 
cally the same as the year previous, 16.78c. per eu. yd., 
but the working cost was 5.34c. or an increase of 0.67c. 
per yard. The results of operations for 1913 are not yet 
available, but the 10 dredges of the Company, with the 
exception of No. 5, which sank July 31 and was two 

steel shipments from the East, or the dredge would have 
been completed sooner. A matter of some interest to 
the general reader, but of more importance to those 
acutely concerned, is the fact that the Yuba Consoli- 
dated has distributed over $8,000,000 in dividends 
among its shareholders; no phantom profits there. 

The Natomas Consolidated operates 10 dredges in 
Sacramento county and 3 in Butte. The Company had 
a fair year as far as its dredging operations were con- 
cerned, though net profits fell somewhat short of 
estimates. The dredges handled during 1912 a total of 
22.155.162 cu. yd. with an average recovery of 9.12c, 
and an operating cost of 4.46c. per cu. yd. The net re- 
sult from dredging operations for the year was $1,031,- 
804. For the eight months that ended August 31, 1913, 
the net result from dredging was a little in excess of 
$791,000, and it is expected that a total approximating 
nearly 24,000,000 yd. will be handled during the year. 
During 1913 dredge No. 7 was entirely reconstructed 



January 10, 1914 


County, district, and 
name of company. 

Name of 


Cap. of 


Manager or superintendent. 

n— 20 dredges operating; approximate total yardage for 1913, 17,000,000. 
Oroville District: 

Oroville Dredging. Ltd Boston 4 

Exploration 2' 5 

Exploration 3 7 

Natomas Consolidated, Feather 1 8 

Feather River division Feather 2 8 

Feather 3 15 

Pacific Gold Dredging Co? Pacific 4 7 

Oro Water, Light & Power Co Lava Bed 2 6 

Empire 5 

Victor 5 

Hunter 5 

Indiana Gold Dredging Co? 

El Oro Gold Dredging Co El Oro 2 5 

Ophir Gold Dredging Co 

Pennsylvania Gold Dredging Co. 

Ophiri 5 

Pennsylvania' 6 

Vil Oro 7 

Oro Vista 5 

Vil Oro Syndicate 


Butte Creek District: 

Butte Creek Con. D. Co Butte Creek 11 

Drexler Dredging Co Wade 4 

Horncut District: 

Kentucky Ranch G. D. Co Kentucky 5 

Gardella Horncut 5 

Yi ha County — 13 dredges operating; approximate total yardage for 1913, 20,000,000. 

Yuba Con. Gold Fields 8 dredges 7"'» Hammon Engineering Co., San Francisco. 

Yuba 13 15 

Yuba 143 15'i 

Marysville Dredging Co Marysville » and 4 8 Bulkeley Wells, general manager, Marysville. 

Sacramento County — 11 dredges operating; approximate annual yardage for 1913, 26.000,000. 

Wy P. Hammon. general manager, 

Alaska-Commercial Bdg.. San Francisco. 

S. L. G. Knox, general manager, 

Alaska-Commercial Bdg., San Francisco. 

O. C. Perry, manager, Oroville. 
C. G. Leeson, manager. 

O. C. Perry, manager, Oroville. 

W. S. Noyes, president, Mills Bdg., San Fran- 
cisco; C. Helman, superintendent. 

F. S. Mayhew, manager, 

Clunie Bdg., San Francisco. 

Sam Cheyney. manager, 

u:i7 First St., San Francisco. 

W. James, superintendent, Oroville. 

L. Gardella, manager, Oroville. 

H. D. Gallihan. superintendent, Chico. 
John Ross Wade, superintendent, Chico. 

L. Gardella, manager, Oroville. 
L. Gardella, manager, Oroville. 

Natomas Consolidated Natomas 1 13VS> 

Natomas 2 and 3 8% 

Natomas 4 13% 

Natomas 5, 6, and 7 . . . . 9 
Natomas 8, 9, and 10 15 

Union Dredging Co Union 1 9 

L. G. Knox, general manager, 
Alaska-Commercial Bdg.. San Francisco. 

A. Turner, superintendent, Folsom. 
Calaveras County — 3 dredges operating; approximate total yardage for 1913, 3,5u0,000. 

A. Moss, manager, 

Calaveras Gold Dredging Co Calaveras* ■ 5 

Isabel Gold Dredging Co Isabel* 5 

Oro Water, Light & Power Co Mokelumne 9 

Butte Dredging Co Butte* 3 

Shasta County — 2 dredges operating.^ 

Shasta Dredging Co Shasta 5 

U. S. Gold Dredging Co Redding 3 

Placek County — 4 dredges operating. 

Gaylord Mining Co Gaylord 6 

El Dorado Placer G. M. Co Cache Rock 

Beaver Gold Dredging Co Beaver 4 

El Dorado & Placer Co. G. D. & M. Co 

Yukon Gold Co 7% 

Trinity County — 2 dredges operating.- 

Alta Bert Dredging Co Alta Bert 7 ' ■ 

Alaska-Commercial Bdg.. San Francisco. 
F. L. Estep, superintendent, Jenny Lind. 
C. G. Leeson, manager, 

First National Bank Bdg., San Francisco. 
L. N. Parks, superintendent, Jenny Lind. 

R. F. Lewis, secretary. 

Mills Bdg.. San Francisco. 
C. A. Westenberg, manager, Berkeley. 

E. C. Gaylord, manager. Auburn. 
A. W. Copps, superintendent. 
N. J. Martin, superintendent, Loomis. 
A. Tredidgo. manager, 

Foxcroft Bdg., San Francisco. 
O: C. Perry, manager, Oroville. 

M. Ashley, superintendent. Trinity Center. 
Baker, superintendent, Minersville. 

George C. Carr, president, Hammonton. 

James H. White, manager, Snelling. 

Trinity River Dredging Co Trinity 9 

Siskiyou County — 1 dredge operating.^ 

Siskiyou Dredging Co Siskiyou 5% 

M> mm Coi nty — 1 dredge operating.^ 

Yosemite D. & M. Co Yosemite 3V» 

Total — 56 dredges operating; approximate yardage for 1913, 70,000,000. 
The number of dredges given refers to those in operation at the end of 1913, eight boats having completed their ground. 

■Nearly worked out Its ground. 

•Indiana dredge to go to Michigan Bar. Sacramento county. Pacific No. 1 was moved to Auburn, Placer county. 
Yuba 14 started December 18. 
*Three dredges in Calaveras county short of water during the fall. 

sTotal approximate yardage, Shasta, Placer, Trinity, Siskiyou, and Merced counties, 3,500,000. 
•Table prepared by Mr. Janin for use in the Mining and Scientific Press, January 1913. revised by M. W. von Bernewitz. 

rj 10 l''i i 


with Den si.-ti luill. anil ra sommiaadoned in Blue Ravine 
M-i> I whiofa sank Jons \ "as aprighted tod 

tva.l> fur repairs early in .Inly. \atoina-. \.. J ha. I a 
narrow es.-ape I'roiu Bulking July !. bat a bid leek was 

■topped by promptly patting oemenl between the oater 
ami inner walls of the bull. U« nl work by the 

Natomas dtvdgcs is deserihed in the Minim/ and 

Scientific Prtu of December 27. Tin- other operationa of 
this Company bave not attained the success contem- 
plated, and it is undergoing reconstruction at tin- time 
of this writing. 

Tin' operations of the Oroville Dredging, Ltd. at 
OroTille are gradually eoming to an end, though the 
Company expects about five years' life for two dredges. 
Pive dredges operated daring 1912 and part of 1913, 
and for the 18 months ending January 31, 1913, handled 
7,062,528 ru. yd. averaging 10.29c. per yd. at a profit 
.if 5.2c. The profit for 1913 is estimated at approxi- 
mately (160,000, and from 1914 to 1918 at about $65,000 
annually, though it is questionable if both of the boats 
will be in operation that length of time. Exploration 
Ni>. 1 sank during the year, and after investigation it 
was decided not to repair it. At the end of the year 
there will be only two dredges operating. Meanwhile 
the Company's holdings in Colombia are becoming 
productive, as mentioned elsewhere, and payment of 
dividends, which have been long deferred on account 
of financing the Colombian property, will, it is ex- 
pected, be resumed early in 1914.